Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
5ac34ac3 | 2 | Copyright (C) 1986, 1987, 1990, 1991, 1993 Free Software Foundation, Inc. |
3340f7e5 | 3 | |
f8701a3f SC |
4 | This file is part of GAS, the GNU Assembler. |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
fecd2382 | 19 | |
016e0d42 | 20 | #if 0 |
fecd2382 RP |
21 | #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will |
22 | change this a bit. But then, GNU isn't | |
23 | spozed to run on your machine anyway. | |
24 | (RMS is so shortsighted sometimes.) | |
25 | */ | |
016e0d42 ILT |
26 | #else |
27 | #define MASK_CHAR ((int)(unsigned char)-1) | |
28 | #endif | |
fecd2382 | 29 | |
9a7d824a | 30 | |
9471a360 KR |
31 | /* This is the largest known floating point format (for now). It will |
32 | grow when we do 4361 style flonums. */ | |
fecd2382 | 33 | |
9471a360 | 34 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
fecd2382 | 35 | |
016e0d42 ILT |
36 | /* Routines that read assembler source text to build spagetti in memory. |
37 | Another group of these functions is in the expr.c module. */ | |
fecd2382 | 38 | |
9471a360 | 39 | /* for isdigit() */ |
6efd877d KR |
40 | #include <ctype.h> |
41 | ||
fecd2382 | 42 | #include "as.h" |
9471a360 | 43 | #include "subsegs.h" |
fecd2382 RP |
44 | |
45 | #include "obstack.h" | |
9a7d824a ILT |
46 | #include "listing.h" |
47 | ||
4064305e SS |
48 | /* We need this, despite the apparent object format dependency, since |
49 | it defines stab types, which all object formats can use now. */ | |
50 | ||
51 | #include "aout/stab_gnu.h" | |
9a7d824a | 52 | |
d4c8cbd8 JL |
53 | /* Allow backends to override the names used for the stab sections. */ |
54 | #ifndef STAB_SECTION_NAME | |
55 | #define STAB_SECTION_NAME ".stab" | |
56 | #endif | |
57 | ||
58 | #ifndef STAB_STRING_SECTION_NAME | |
59 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
60 | #endif | |
61 | ||
9a7d824a ILT |
62 | #ifndef TC_START_LABEL |
63 | #define TC_START_LABEL(x,y) (x==':') | |
64 | #endif | |
fecd2382 | 65 | |
016e0d42 ILT |
66 | /* The NOP_OPCODE is for the alignment fill value. |
67 | * fill it a nop instruction so that the disassembler does not choke | |
68 | * on it | |
69 | */ | |
70 | #ifndef NOP_OPCODE | |
71 | #define NOP_OPCODE 0x00 | |
72 | #endif | |
73 | ||
74 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 RP |
75 | |
76 | #if BITS_PER_CHAR != 8 | |
6efd877d KR |
77 | /* The following table is indexed by[(char)] and will break if |
78 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
79 | die horribly; | |
fecd2382 | 80 | #endif |
f8701a3f | 81 | |
c978e704 ILT |
82 | #ifndef LEX_AT |
83 | /* The m88k unfortunately uses @ as a label beginner. */ | |
84 | #define LEX_AT 0 | |
85 | #endif | |
86 | ||
016e0d42 ILT |
87 | /* used by is_... macros. our ctype[] */ |
88 | const char lex_type[256] = | |
89 | { | |
90 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
91 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
92 | 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ | |
93 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ | |
c978e704 | 94 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ |
016e0d42 ILT |
95 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 3, /* PQRSTUVWXYZ[\]^_ */ |
96 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
97 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, /* pqrstuvwxyz{|}~. */ | |
98 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
99 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
100 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
101 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
102 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
103 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
104 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
105 | }; | |
106 | ||
107 | ||
108 | /* | |
fecd2382 RP |
109 | * In: a character. |
110 | * Out: 1 if this character ends a line. | |
111 | */ | |
112 | #define _ (0) | |
016e0d42 ILT |
113 | char is_end_of_line[256] = |
114 | { | |
fecd2382 | 115 | #ifdef CR_EOL |
016e0d42 | 116 | _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 117 | #else |
016e0d42 | 118 | _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 119 | #endif |
016e0d42 | 120 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
40324362 KR |
121 | #ifdef TC_HPPA |
122 | _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */ | |
123 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */ | |
124 | #else | |
016e0d42 ILT |
125 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
126 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
40324362 | 127 | #endif |
016e0d42 ILT |
128 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
129 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
130 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
131 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
132 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
133 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
134 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
135 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
136 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
137 | }; | |
fecd2382 RP |
138 | #undef _ |
139 | ||
016e0d42 ILT |
140 | /* Functions private to this file. */ |
141 | ||
142 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
143 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 144 | |
9c6d3f66 KR |
145 | int target_big_endian; |
146 | ||
9471a360 | 147 | static char *old_buffer; /* JF a hack */ |
016e0d42 ILT |
148 | static char *old_input; |
149 | static char *old_limit; | |
fecd2382 | 150 | |
016e0d42 | 151 | /* Variables for handling include file directory list. */ |
fecd2382 | 152 | |
016e0d42 ILT |
153 | char **include_dirs; /* List of pointers to directories to |
154 | search for .include's */ | |
155 | int include_dir_count; /* How many are in the list */ | |
156 | int include_dir_maxlen = 1;/* Length of longest in list */ | |
fecd2382 RP |
157 | |
158 | #ifndef WORKING_DOT_WORD | |
016e0d42 | 159 | struct broken_word *broken_words; |
9471a360 | 160 | int new_broken_words; |
fecd2382 RP |
161 | #endif |
162 | ||
016e0d42 ILT |
163 | static char *demand_copy_string PARAMS ((int *lenP)); |
164 | int is_it_end_of_statement PARAMS ((void)); | |
5ac34ac3 | 165 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 166 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 167 | static void pobegin PARAMS ((void)); |
fecd2382 | 168 | \f |
6efd877d | 169 | |
016e0d42 ILT |
170 | void |
171 | read_begin () | |
fecd2382 | 172 | { |
016e0d42 | 173 | const char *p; |
f8701a3f | 174 | |
6efd877d KR |
175 | pobegin (); |
176 | obj_read_begin_hook (); | |
f8701a3f | 177 | |
4380166d KR |
178 | /* Something close -- but not too close -- to a multiple of 1024. |
179 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
180 | obstack_begin (¬es, 5090); | |
181 | obstack_begin (&cond_obstack, 990); | |
f8701a3f | 182 | |
f8701a3f SC |
183 | /* Use machine dependent syntax */ |
184 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 185 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 186 | /* Use more. FIXME-SOMEDAY. */ |
fecd2382 RP |
187 | } |
188 | \f | |
189 | /* set up pseudo-op tables */ | |
190 | ||
c8863a58 | 191 | struct hash_control *po_hash; |
fecd2382 | 192 | |
016e0d42 | 193 | static const pseudo_typeS potable[] = |
fecd2382 | 194 | { |
6efd877d KR |
195 | {"abort", s_abort, 0}, |
196 | {"align", s_align_ptwo, 0}, | |
197 | {"ascii", stringer, 0}, | |
198 | {"asciz", stringer, 1}, | |
f8701a3f | 199 | /* block */ |
6efd877d KR |
200 | {"byte", cons, 1}, |
201 | {"comm", s_comm, 0}, | |
202 | {"data", s_data, 0}, | |
604633ae | 203 | #ifdef S_SET_DESC |
4064305e | 204 | {"desc", s_desc, 0}, |
604633ae | 205 | #endif |
f8701a3f | 206 | /* dim */ |
6efd877d | 207 | {"double", float_cons, 'd'}, |
f8701a3f | 208 | /* dsect */ |
6efd877d KR |
209 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
210 | {"else", s_else, 0}, | |
211 | {"end", s_end, 0}, | |
212 | {"endif", s_endif, 0}, | |
f8701a3f | 213 | /* endef */ |
6efd877d | 214 | {"equ", s_set, 0}, |
f8701a3f SC |
215 | /* err */ |
216 | /* extend */ | |
6efd877d | 217 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
218 | {"appfile", s_app_file, 1}, |
219 | {"appline", s_app_line, 0}, | |
6efd877d KR |
220 | {"file", s_app_file, 0}, |
221 | {"fill", s_fill, 0}, | |
222 | {"float", float_cons, 'f'}, | |
6efd877d KR |
223 | {"global", s_globl, 0}, |
224 | {"globl", s_globl, 0}, | |
225 | {"hword", cons, 2}, | |
226 | {"if", s_if, 0}, | |
227 | {"ifdef", s_ifdef, 0}, | |
228 | {"ifeqs", s_ifeqs, 0}, | |
229 | {"ifndef", s_ifdef, 1}, | |
230 | {"ifnes", s_ifeqs, 1}, | |
231 | {"ifnotdef", s_ifdef, 1}, | |
232 | {"include", s_include, 0}, | |
233 | {"int", cons, 4}, | |
234 | {"lcomm", s_lcomm, 0}, | |
235 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
236 | {"list", listing_list, 1}, /* Turn listing on */ | |
237 | {"long", cons, 4}, | |
238 | {"lsym", s_lsym, 0}, | |
239 | {"nolist", listing_list, 0}, /* Turn listing off */ | |
80aab579 | 240 | {"octa", cons, 16}, |
6efd877d KR |
241 | {"org", s_org, 0}, |
242 | {"psize", listing_psize, 0}, /* set paper size */ | |
f8701a3f | 243 | /* print */ |
80aab579 | 244 | {"quad", cons, 8}, |
6efd877d | 245 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
246 | /* scl */ |
247 | /* sect */ | |
6efd877d KR |
248 | {"set", s_set, 0}, |
249 | {"short", cons, 2}, | |
250 | {"single", float_cons, 'f'}, | |
f8701a3f | 251 | /* size */ |
6efd877d | 252 | {"space", s_space, 0}, |
4064305e SS |
253 | {"stabd", s_stab, 'd'}, |
254 | {"stabn", s_stab, 'n'}, | |
255 | {"stabs", s_stab, 's'}, | |
ba71c54d | 256 | {"string", stringer, 1}, |
f8701a3f | 257 | /* tag */ |
6efd877d KR |
258 | {"text", s_text, 0}, |
259 | {"title", listing_title, 0}, /* Listing title */ | |
f8701a3f SC |
260 | /* type */ |
261 | /* use */ | |
262 | /* val */ | |
4064305e | 263 | {"xstabs", s_xstab, 's'}, |
6efd877d KR |
264 | {"word", cons, 2}, |
265 | {NULL} /* end sentinel */ | |
fecd2382 RP |
266 | }; |
267 | ||
6efd877d KR |
268 | static void |
269 | pobegin () | |
270 | { | |
604633ae | 271 | const char *errtxt; /* error text */ |
6efd877d KR |
272 | const pseudo_typeS *pop; |
273 | ||
274 | po_hash = hash_new (); | |
275 | ||
276 | /* Do the target-specific pseudo ops. */ | |
277 | for (pop = md_pseudo_table; pop->poc_name; pop++) | |
278 | { | |
279 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
80aab579 | 280 | if (errtxt) |
6efd877d KR |
281 | { |
282 | as_fatal ("error constructing md pseudo-op table"); | |
283 | } /* on error */ | |
284 | } /* for each op */ | |
285 | ||
286 | /* Now object specific. Skip any that were in the target table. */ | |
287 | for (pop = obj_pseudo_table; pop->poc_name; pop++) | |
288 | { | |
289 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
80aab579 | 290 | if (errtxt) |
6efd877d KR |
291 | { |
292 | if (!strcmp (errtxt, "exists")) | |
293 | { | |
fecd2382 | 294 | #ifdef DIE_ON_OVERRIDES |
6efd877d | 295 | as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name); |
fecd2382 | 296 | #endif /* DIE_ON_OVERRIDES */ |
6efd877d KR |
297 | continue; /* OK if target table overrides. */ |
298 | } | |
299 | else | |
300 | { | |
301 | as_fatal ("error constructing obj pseudo-op table"); | |
302 | } /* if overridden */ | |
303 | } /* on error */ | |
304 | } /* for each op */ | |
305 | ||
306 | /* Now portable ones. Skip any that we've seen already. */ | |
307 | for (pop = potable; pop->poc_name; pop++) | |
308 | { | |
309 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
80aab579 | 310 | if (errtxt) |
6efd877d KR |
311 | { |
312 | if (!strcmp (errtxt, "exists")) | |
313 | { | |
fecd2382 | 314 | #ifdef DIE_ON_OVERRIDES |
6efd877d | 315 | as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name); |
fecd2382 | 316 | #endif /* DIE_ON_OVERRIDES */ |
6efd877d KR |
317 | continue; /* OK if target table overrides. */ |
318 | } | |
319 | else | |
320 | { | |
321 | as_fatal ("error constructing obj pseudo-op table"); | |
322 | } /* if overridden */ | |
323 | } /* on error */ | |
324 | } /* for each op */ | |
325 | ||
326 | return; | |
327 | } /* pobegin() */ | |
fecd2382 | 328 | \f |
58d4951d ILT |
329 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
330 | if (ignore_input ()) \ | |
331 | { \ | |
332 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
333 | if (input_line_pointer == buffer_limit) \ | |
334 | break; \ | |
335 | continue; \ | |
f8701a3f | 336 | } |
a39116f1 | 337 | |
fecd2382 RP |
338 | |
339 | /* read_a_source_file() | |
340 | * | |
341 | * We read the file, putting things into a web that | |
342 | * represents what we have been reading. | |
343 | */ | |
6efd877d KR |
344 | void |
345 | read_a_source_file (name) | |
346 | char *name; | |
fecd2382 | 347 | { |
f8701a3f | 348 | register char c; |
6efd877d | 349 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 350 | register int temp; |
6efd877d | 351 | pseudo_typeS *pop; |
f8701a3f | 352 | |
6efd877d | 353 | buffer = input_scrub_new_file (name); |
f8701a3f | 354 | |
6efd877d KR |
355 | listing_file (name); |
356 | listing_newline (""); | |
f8701a3f | 357 | |
6efd877d KR |
358 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
359 | { /* We have another line to parse. */ | |
360 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
361 | contin: /* JF this goto is my fault I admit it. |
362 | Someone brave please re-write the whole | |
363 | input section here? Pleeze??? */ | |
6efd877d | 364 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
365 | { |
366 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
367 | |
368 | /* | |
369 | * We now have input_line_pointer->1st char of next line. | |
370 | * If input_line_pointer [-1] == '\n' then we just | |
371 | * scanned another line: so bump line counters. | |
372 | */ | |
6efd877d KR |
373 | if (input_line_pointer[-1] == '\n') |
374 | { | |
375 | bump_line_counters (); | |
f8701a3f SC |
376 | |
377 | #ifdef MRI | |
378 | /* Text at the start of a line must be a label, we run down and stick a colon in */ | |
6efd877d KR |
379 | if (is_name_beginner (*input_line_pointer)) |
380 | { | |
381 | char *line_start = input_line_pointer; | |
382 | char c = get_symbol_end (); | |
383 | colon (line_start); | |
384 | *input_line_pointer = c; | |
385 | if (c == ':') | |
386 | input_line_pointer++; | |
387 | ||
388 | } | |
f8701a3f | 389 | #endif |
9471a360 | 390 | } |
f8701a3f SC |
391 | |
392 | ||
f8701a3f SC |
393 | /* |
394 | * We are at the begining of a line, or similar place. | |
395 | * We expect a well-formed assembler statement. | |
396 | * A "symbol-name:" is a statement. | |
397 | * | |
398 | * Depending on what compiler is used, the order of these tests | |
399 | * may vary to catch most common case 1st. | |
400 | * Each test is independent of all other tests at the (top) level. | |
401 | * PLEASE make a compiler that doesn't use this assembler. | |
402 | * It is crufty to waste a compiler's time encoding things for this | |
403 | * assembler, which then wastes more time decoding it. | |
404 | * (And communicating via (linear) files is silly! | |
405 | * If you must pass stuff, please pass a tree!) | |
406 | */ | |
9471a360 KR |
407 | if ((c = *input_line_pointer++) == '\t' |
408 | || c == ' ' | |
409 | || c == '\f' | |
410 | || c == 0) | |
6efd877d KR |
411 | { |
412 | c = *input_line_pointer++; | |
413 | } | |
414 | know (c != ' '); /* No further leading whitespace. */ | |
415 | LISTING_NEWLINE (); | |
f8701a3f SC |
416 | /* |
417 | * C is the 1st significant character. | |
418 | * Input_line_pointer points after that character. | |
419 | */ | |
6efd877d KR |
420 | if (is_name_beginner (c)) |
421 | { /* want user-defined label or pseudo/opcode */ | |
422 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
423 | ||
f8701a3f | 424 | s = --input_line_pointer; |
6efd877d | 425 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
426 | /* |
427 | * C is character after symbol. | |
428 | * That character's place in the input line is now '\0'. | |
429 | * S points to the beginning of the symbol. | |
430 | * [In case of pseudo-op, s->'.'.] | |
431 | * Input_line_pointer->'\0' where c was. | |
432 | */ | |
9a7d824a | 433 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d KR |
434 | { |
435 | colon (s); /* user-defined label */ | |
436 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ | |
f8701a3f | 437 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
438 | SKIP_WHITESPACE (); |
439 | ||
f8701a3f | 440 | |
6efd877d | 441 | } |
4064305e SS |
442 | else if (c == '=' |
443 | || (input_line_pointer[1] == '=' | |
444 | #ifdef TC_EQUAL_IN_INSN | |
445 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
446 | #endif | |
447 | )) | |
9c6d3f66 | 448 | { |
6efd877d KR |
449 | equals (s); |
450 | demand_empty_rest_of_line (); | |
451 | } | |
452 | else | |
453 | { /* expect pseudo-op or machine instruction */ | |
f8701a3f | 454 | #ifdef MRI |
6efd877d KR |
455 | if (!done_pseudo (s)) |
456 | ||
f8701a3f | 457 | #else |
8ff6f40e ILT |
458 | |
459 | pop = NULL; | |
460 | ||
d4c8cbd8 JL |
461 | #define IGNORE_OPCODE_CASE |
462 | #ifdef IGNORE_OPCODE_CASE | |
463 | { | |
464 | char *s2 = s; | |
465 | while (*s2) | |
466 | { | |
467 | if (isupper (*s2)) | |
468 | *s2 = tolower (*s2); | |
469 | s2++; | |
470 | } | |
471 | } | |
472 | #endif | |
473 | ||
8ff6f40e ILT |
474 | #ifdef NO_PSEUDO_DOT |
475 | /* The m88k uses pseudo-ops without a period. */ | |
476 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
cf897ce2 ILT |
477 | if (pop != NULL && pop->poc_handler == NULL) |
478 | pop = NULL; | |
8ff6f40e ILT |
479 | #endif |
480 | ||
481 | if (pop != NULL || *s == '.') | |
6efd877d KR |
482 | { |
483 | /* | |
9471a360 KR |
484 | * PSEUDO - OP. |
485 | * | |
486 | * WARNING: c has next char, which may be end-of-line. | |
487 | * We lookup the pseudo-op table with s+1 because we | |
488 | * already know that the pseudo-op begins with a '.'. | |
489 | */ | |
6efd877d | 490 | |
8ff6f40e ILT |
491 | if (pop == NULL) |
492 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d KR |
493 | |
494 | /* Print the error msg now, while we still can */ | |
8ff6f40e | 495 | if (pop == NULL) |
6efd877d KR |
496 | { |
497 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 498 | *input_line_pointer = c; |
6efd877d | 499 | s_ignore (0); |
46b81190 | 500 | continue; |
6efd877d KR |
501 | } |
502 | ||
503 | /* Put it back for error messages etc. */ | |
504 | *input_line_pointer = c; | |
9c6d3f66 KR |
505 | /* The following skip of whitespace is compulsory. |
506 | A well shaped space is sometimes all that separates | |
507 | keyword from operands. */ | |
6efd877d | 508 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 509 | input_line_pointer++; |
6efd877d | 510 | /* |
9471a360 KR |
511 | * Input_line is restored. |
512 | * Input_line_pointer->1st non-blank char | |
513 | * after pseudo-operation. | |
514 | */ | |
46b81190 | 515 | (*pop->poc_handler) (pop->poc_val); |
6efd877d KR |
516 | } |
517 | else | |
f8701a3f | 518 | #endif |
6efd877d KR |
519 | { /* machine instruction */ |
520 | /* WARNING: c has char, which may be end-of-line. */ | |
521 | /* Also: input_line_pointer->`\0` where c was. */ | |
522 | *input_line_pointer = c; | |
58d4951d | 523 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4064305e SS |
524 | #ifdef TC_EOL_IN_INSN |
525 | || TC_EOL_IN_INSN (input_line_pointer) | |
526 | #endif | |
527 | ) | |
6efd877d KR |
528 | { |
529 | input_line_pointer++; | |
530 | } | |
f8701a3f | 531 | |
6efd877d KR |
532 | c = *input_line_pointer; |
533 | *input_line_pointer = '\0'; | |
f8701a3f | 534 | |
6efd877d | 535 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 536 | |
6efd877d | 537 | *input_line_pointer++ = c; |
f8701a3f | 538 | |
d4c8cbd8 JL |
539 | /* We resume loop AFTER the end-of-line from |
540 | this instruction. */ | |
6efd877d | 541 | } /* if (*s=='.') */ |
6efd877d | 542 | } /* if c==':' */ |
f8701a3f | 543 | continue; |
6efd877d | 544 | } /* if (is_name_beginner(c) */ |
f8701a3f | 545 | |
f8701a3f | 546 | |
d4c8cbd8 | 547 | /* Empty statement? */ |
58d4951d | 548 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 549 | continue; |
6efd877d KR |
550 | |
551 | #if defined(LOCAL_LABELS_DOLLAR) || defined(LOCAL_LABELS_FB) | |
552 | if (isdigit (c)) | |
d4c8cbd8 JL |
553 | { |
554 | /* local label ("4:") */ | |
6efd877d KR |
555 | char *backup = input_line_pointer; |
556 | ||
557 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
558 | ||
559 | temp = c - '0'; | |
560 | ||
561 | while (isdigit (*input_line_pointer)) | |
562 | { | |
563 | temp = (temp * 10) + *input_line_pointer - '0'; | |
564 | ++input_line_pointer; | |
565 | } /* read the whole number */ | |
566 | ||
567 | #ifdef LOCAL_LABELS_DOLLAR | |
568 | if (*input_line_pointer == '$' | |
569 | && *(input_line_pointer + 1) == ':') | |
570 | { | |
571 | input_line_pointer += 2; | |
572 | ||
573 | if (dollar_label_defined (temp)) | |
574 | { | |
575 | as_fatal ("label \"%d$\" redefined", temp); | |
576 | } | |
577 | ||
578 | define_dollar_label (temp); | |
579 | colon (dollar_label_name (temp, 0)); | |
580 | continue; | |
581 | } | |
f8701a3f | 582 | #endif /* LOCAL_LABELS_DOLLAR */ |
6efd877d | 583 | |
f8701a3f | 584 | #ifdef LOCAL_LABELS_FB |
6efd877d KR |
585 | if (*input_line_pointer++ == ':') |
586 | { | |
587 | fb_label_instance_inc (temp); | |
588 | colon (fb_label_name (temp, 0)); | |
589 | continue; | |
590 | } | |
f8701a3f | 591 | #endif /* LOCAL_LABELS_FB */ |
6efd877d KR |
592 | |
593 | input_line_pointer = backup; | |
594 | } /* local label ("4:") */ | |
f8701a3f SC |
595 | #endif /* LOCAL_LABELS_DOLLAR or LOCAL_LABELS_FB */ |
596 | ||
6efd877d KR |
597 | if (c && strchr (line_comment_chars, c)) |
598 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
599 | char *ends; |
600 | char *new_buf; | |
601 | char *new_tmp; | |
604633ae | 602 | unsigned int new_length; |
f8701a3f | 603 | char *tmp_buf = 0; |
6efd877d KR |
604 | extern char *scrub_string, *scrub_last_string; |
605 | ||
606 | bump_line_counters (); | |
607 | s = input_line_pointer; | |
608 | if (strncmp (s, "APP\n", 4)) | |
609 | continue; /* We ignore it */ | |
610 | s += 4; | |
611 | ||
612 | ends = strstr (s, "#NO_APP\n"); | |
613 | ||
614 | if (!ends) | |
615 | { | |
604633ae ILT |
616 | unsigned int tmp_len; |
617 | unsigned int num; | |
6efd877d | 618 | |
f8701a3f SC |
619 | /* The end of the #APP wasn't in this buffer. We |
620 | keep reading in buffers until we find the #NO_APP | |
621 | that goes with this #APP There is one. The specs | |
622 | guarentee it. . . */ | |
6efd877d | 623 | tmp_len = buffer_limit - s; |
85825401 | 624 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 625 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
626 | do |
627 | { | |
628 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 629 | if (!new_tmp) |
6efd877d | 630 | break; |
f8701a3f | 631 | else |
6efd877d | 632 | buffer_limit = new_tmp; |
f8701a3f | 633 | input_line_pointer = buffer; |
6efd877d | 634 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 635 | if (ends) |
6efd877d | 636 | num = ends - buffer; |
f8701a3f | 637 | else |
6efd877d KR |
638 | num = buffer_limit - buffer; |
639 | ||
640 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
4380166d | 641 | memcpy (tmp_buf, buffer + tmp_len, num); |
6efd877d KR |
642 | tmp_len += num; |
643 | } | |
644 | while (!ends); | |
645 | ||
646 | input_line_pointer = ends ? ends + 8 : NULL; | |
647 | ||
648 | s = tmp_buf; | |
649 | ends = s + tmp_len; | |
650 | ||
651 | } | |
652 | else | |
653 | { | |
654 | input_line_pointer = ends + 8; | |
655 | } | |
656 | new_buf = xmalloc (100); | |
657 | new_length = 100; | |
658 | new_tmp = new_buf; | |
659 | ||
660 | scrub_string = s; | |
f8701a3f | 661 | scrub_last_string = ends; |
6efd877d KR |
662 | for (;;) |
663 | { | |
f8701a3f SC |
664 | int ch; |
665 | ||
6efd877d KR |
666 | ch = do_scrub_next_char (scrub_from_string, scrub_to_string); |
667 | if (ch == EOF) | |
668 | break; | |
669 | *new_tmp++ = ch; | |
670 | if (new_tmp == new_buf + new_length) | |
671 | { | |
672 | new_buf = xrealloc (new_buf, new_length + 100); | |
673 | new_tmp = new_buf + new_length; | |
674 | new_length += 100; | |
f8701a3f | 675 | } |
fecd2382 | 676 | } |
f8701a3f SC |
677 | |
678 | if (tmp_buf) | |
6efd877d KR |
679 | free (tmp_buf); |
680 | old_buffer = buffer; | |
681 | old_input = input_line_pointer; | |
682 | old_limit = buffer_limit; | |
683 | buffer = new_buf; | |
684 | input_line_pointer = new_buf; | |
685 | buffer_limit = new_tmp; | |
f8701a3f SC |
686 | continue; |
687 | } | |
688 | ||
6efd877d | 689 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f SC |
690 | |
691 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ | |
692 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
693 | ignore_rest_of_line (); |
694 | } /* while (input_line_pointer<buffer_limit) */ | |
695 | if (old_buffer) | |
696 | { | |
697 | bump_line_counters (); | |
698 | if (old_input != 0) | |
699 | { | |
700 | buffer = old_buffer; | |
701 | input_line_pointer = old_input; | |
702 | buffer_limit = old_limit; | |
f8701a3f SC |
703 | old_buffer = 0; |
704 | goto contin; | |
705 | } | |
706 | } | |
6efd877d KR |
707 | } /* while (more buffers to scan) */ |
708 | input_scrub_close (); /* Close the input file */ | |
f8701a3f | 709 | |
6efd877d | 710 | } /* read_a_source_file() */ |
fecd2382 | 711 | |
6efd877d | 712 | void |
604633ae ILT |
713 | s_abort (ignore) |
714 | int ignore; | |
6efd877d KR |
715 | { |
716 | as_fatal (".abort detected. Abandoning ship."); | |
717 | } /* s_abort() */ | |
fecd2382 RP |
718 | |
719 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
720 | void |
721 | s_align_bytes (arg) | |
722 | int arg; | |
fecd2382 | 723 | { |
6efd877d KR |
724 | register unsigned int temp; |
725 | register long temp_fill; | |
726 | unsigned int i = 0; | |
727 | unsigned long max_alignment = 1 << 15; | |
f8701a3f | 728 | |
58d4951d | 729 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
730 | temp = arg; /* Default value from pseudo-op table */ |
731 | else | |
732 | temp = get_absolute_expression (); | |
f8701a3f | 733 | |
6efd877d KR |
734 | if (temp > max_alignment) |
735 | { | |
736 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
737 | } |
738 | ||
6efd877d | 739 | /* |
f8701a3f SC |
740 | * For the sparc, `.align (1<<n)' actually means `.align n' |
741 | * so we have to convert it. | |
742 | */ | |
6efd877d KR |
743 | if (temp != 0) |
744 | { | |
745 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
746 | ; | |
f8701a3f | 747 | } |
6efd877d KR |
748 | if (temp != 1) |
749 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 750 | |
6efd877d KR |
751 | temp = i; |
752 | if (*input_line_pointer == ',') | |
753 | { | |
754 | input_line_pointer++; | |
755 | temp_fill = get_absolute_expression (); | |
f8701a3f | 756 | } |
9471a360 | 757 | else if (now_seg != data_section && now_seg != bss_section) |
016e0d42 | 758 | temp_fill = NOP_OPCODE; |
6efd877d | 759 | else |
016e0d42 | 760 | temp_fill = 0; |
6efd877d KR |
761 | /* Only make a frag if we HAVE to. . . */ |
762 | if (temp && !need_pass_2) | |
604633ae | 763 | frag_align ((int) temp, (int) temp_fill); |
f8701a3f | 764 | |
604633ae | 765 | record_alignment (now_seg, (int) temp); |
49864cfa | 766 | |
6efd877d KR |
767 | demand_empty_rest_of_line (); |
768 | } /* s_align_bytes() */ | |
fecd2382 RP |
769 | |
770 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 771 | void |
604633ae ILT |
772 | s_align_ptwo (ignore) |
773 | int ignore; | |
6efd877d KR |
774 | { |
775 | register int temp; | |
776 | register long temp_fill; | |
777 | long max_alignment = 15; | |
778 | ||
779 | temp = get_absolute_expression (); | |
780 | if (temp > max_alignment) | |
781 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
782 | else if (temp < 0) | |
783 | { | |
784 | as_bad ("Alignment negative. 0 assumed."); | |
785 | temp = 0; | |
786 | } | |
787 | if (*input_line_pointer == ',') | |
788 | { | |
789 | input_line_pointer++; | |
790 | temp_fill = get_absolute_expression (); | |
791 | } | |
9471a360 KR |
792 | /* @@ Fix this right for BFD! */ |
793 | else if (now_seg != data_section && now_seg != bss_section) | |
016e0d42 | 794 | temp_fill = NOP_OPCODE; |
6efd877d KR |
795 | else |
796 | temp_fill = 0; | |
797 | /* Only make a frag if we HAVE to. . . */ | |
798 | if (temp && !need_pass_2) | |
799 | frag_align (temp, (int) temp_fill); | |
800 | ||
801 | record_alignment (now_seg, temp); | |
802 | ||
803 | demand_empty_rest_of_line (); | |
804 | } /* s_align_ptwo() */ | |
805 | ||
806 | void | |
604633ae ILT |
807 | s_comm (ignore) |
808 | int ignore; | |
6efd877d KR |
809 | { |
810 | register char *name; | |
811 | register char c; | |
812 | register char *p; | |
58d4951d | 813 | offsetT temp; |
6efd877d KR |
814 | register symbolS *symbolP; |
815 | ||
816 | name = input_line_pointer; | |
817 | c = get_symbol_end (); | |
818 | /* just after name is now '\0' */ | |
819 | p = input_line_pointer; | |
820 | *p = c; | |
821 | SKIP_WHITESPACE (); | |
822 | if (*input_line_pointer != ',') | |
823 | { | |
824 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
825 | ignore_rest_of_line (); | |
826 | return; | |
827 | } | |
828 | input_line_pointer++; /* skip ',' */ | |
829 | if ((temp = get_absolute_expression ()) < 0) | |
830 | { | |
58d4951d | 831 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
6efd877d KR |
832 | ignore_rest_of_line (); |
833 | return; | |
834 | } | |
835 | *p = 0; | |
836 | symbolP = symbol_find_or_make (name); | |
837 | *p = c; | |
838 | if (S_IS_DEFINED (symbolP)) | |
839 | { | |
840 | as_bad ("Ignoring attempt to re-define symbol"); | |
841 | ignore_rest_of_line (); | |
842 | return; | |
843 | } | |
844 | if (S_GET_VALUE (symbolP)) | |
845 | { | |
58d4951d ILT |
846 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
847 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 848 | S_GET_NAME (symbolP), |
58d4951d ILT |
849 | (long) S_GET_VALUE (symbolP), |
850 | (long) temp); | |
6efd877d KR |
851 | } |
852 | else | |
853 | { | |
58d4951d | 854 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
855 | S_SET_EXTERNAL (symbolP); |
856 | } | |
9471a360 | 857 | #ifdef OBJ_VMS |
4064305e SS |
858 | if ( (!temp) || !flagseen['1']) |
859 | S_GET_OTHER(symbolP) = const_flag; | |
9471a360 | 860 | #endif /* not OBJ_VMS */ |
6efd877d KR |
861 | know (symbolP->sy_frag == &zero_address_frag); |
862 | demand_empty_rest_of_line (); | |
863 | } /* s_comm() */ | |
fecd2382 RP |
864 | |
865 | void | |
604633ae ILT |
866 | s_data (ignore) |
867 | int ignore; | |
fecd2382 | 868 | { |
ffffc8fb | 869 | segT section; |
6efd877d | 870 | register int temp; |
f8701a3f | 871 | |
6efd877d | 872 | temp = get_absolute_expression (); |
ffffc8fb ILT |
873 | if (flagseen['R']) |
874 | { | |
875 | section = text_section; | |
876 | temp += 1000; | |
877 | } | |
878 | else | |
879 | section = data_section; | |
880 | ||
ffffc8fb | 881 | subseg_set (section, (subsegT) temp); |
f8701a3f | 882 | |
9471a360 | 883 | #ifdef OBJ_VMS |
6efd877d | 884 | const_flag = 0; |
fecd2382 | 885 | #endif |
6efd877d | 886 | demand_empty_rest_of_line (); |
fecd2382 RP |
887 | } |
888 | ||
9a7d824a ILT |
889 | /* Handle the .appfile pseudo-op. This is automatically generated by |
890 | do_scrub_next_char when a preprocessor # line comment is seen with | |
891 | a file name. This default definition may be overridden by the | |
892 | object or CPU specific pseudo-ops. This function is also the | |
893 | default definition for .file; the APPFILE argument is 1 for | |
894 | .appfile, 0 for .file. */ | |
895 | ||
6efd877d | 896 | void |
9a7d824a ILT |
897 | s_app_file (appfile) |
898 | int appfile; | |
6efd877d KR |
899 | { |
900 | register char *s; | |
901 | int length; | |
f8701a3f | 902 | |
6efd877d KR |
903 | /* Some assemblers tolerate immediately following '"' */ |
904 | if ((s = demand_copy_string (&length)) != 0) | |
905 | { | |
9a7d824a ILT |
906 | /* If this is a fake .appfile, a fake newline was inserted into |
907 | the buffer. Passing -2 to new_logical_line tells it to | |
908 | account for it. */ | |
909 | new_logical_line (s, appfile ? -2 : -1); | |
6efd877d | 910 | demand_empty_rest_of_line (); |
9a7d824a ILT |
911 | #ifdef LISTING |
912 | if (listing) | |
913 | listing_source_file (s); | |
914 | #endif | |
6efd877d | 915 | } |
fecd2382 | 916 | #ifdef OBJ_COFF |
6efd877d | 917 | c_dot_file_symbol (s); |
fecd2382 | 918 | #endif /* OBJ_COFF */ |
40324362 KR |
919 | #ifdef OBJ_ELF |
920 | elf_file_symbol (s); | |
921 | #endif | |
922 | } | |
fecd2382 | 923 | |
9a7d824a ILT |
924 | /* Handle the .appline pseudo-op. This is automatically generated by |
925 | do_scrub_next_char when a preprocessor # line comment is seen. | |
926 | This default definition may be overridden by the object or CPU | |
927 | specific pseudo-ops. */ | |
928 | ||
929 | void | |
604633ae ILT |
930 | s_app_line (ignore) |
931 | int ignore; | |
9a7d824a ILT |
932 | { |
933 | int l; | |
934 | ||
935 | /* The given number is that of the next line. */ | |
936 | l = get_absolute_expression () - 1; | |
937 | new_logical_line ((char *) NULL, l); | |
938 | #ifdef LISTING | |
939 | if (listing) | |
940 | listing_source_line (l); | |
941 | #endif | |
942 | demand_empty_rest_of_line (); | |
943 | } | |
944 | ||
6efd877d | 945 | void |
604633ae ILT |
946 | s_fill (ignore) |
947 | int ignore; | |
6efd877d KR |
948 | { |
949 | long temp_repeat = 0; | |
950 | long temp_size = 1; | |
951 | register long temp_fill = 0; | |
952 | char *p; | |
f8701a3f | 953 | |
7c2d4011 | 954 | |
6efd877d KR |
955 | temp_repeat = get_absolute_expression (); |
956 | if (*input_line_pointer == ',') | |
957 | { | |
958 | input_line_pointer++; | |
959 | temp_size = get_absolute_expression (); | |
960 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
961 | { |
962 | input_line_pointer++; | |
6efd877d | 963 | temp_fill = get_absolute_expression (); |
fecd2382 | 964 | } |
6efd877d | 965 | } |
c8863a58 | 966 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 967 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
968 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
969 | { | |
970 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
971 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
972 | } | |
973 | if (temp_size < 0) | |
974 | { | |
975 | as_warn ("Size negative: .fill ignored."); | |
976 | temp_size = 0; | |
977 | } | |
978 | else if (temp_repeat <= 0) | |
979 | { | |
980 | as_warn ("Repeat < 0, .fill ignored"); | |
981 | temp_size = 0; | |
982 | } | |
7fd3560a | 983 | |
6efd877d KR |
984 | if (temp_size && !need_pass_2) |
985 | { | |
986 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 987 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
988 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
989 | * flavoured AS. The following bizzare behaviour is to be | |
990 | * compatible with above. I guess they tried to take up to 8 | |
991 | * bytes from a 4-byte expression and they forgot to sign | |
992 | * extend. Un*x Sux. */ | |
fecd2382 | 993 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 994 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
995 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
996 | ? BSD_FILL_SIZE_CROCK_4 | |
997 | : (int) temp_size)); | |
998 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
999 | * but emits no error message because it seems a legal thing to do. | |
1000 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1001 | */ | |
6efd877d | 1002 | } |
6efd877d | 1003 | demand_empty_rest_of_line (); |
f8701a3f SC |
1004 | } |
1005 | ||
6efd877d | 1006 | void |
604633ae ILT |
1007 | s_globl (ignore) |
1008 | int ignore; | |
6efd877d | 1009 | { |
40324362 KR |
1010 | char *name; |
1011 | int c; | |
1012 | symbolS *symbolP; | |
fecd2382 | 1013 | |
6efd877d KR |
1014 | do |
1015 | { | |
1016 | name = input_line_pointer; | |
1017 | c = get_symbol_end (); | |
1018 | symbolP = symbol_find_or_make (name); | |
1019 | *input_line_pointer = c; | |
1020 | SKIP_WHITESPACE (); | |
1021 | S_SET_EXTERNAL (symbolP); | |
1022 | if (c == ',') | |
1023 | { | |
1024 | input_line_pointer++; | |
1025 | SKIP_WHITESPACE (); | |
1026 | if (*input_line_pointer == '\n') | |
1027 | c = '\n'; | |
1028 | } | |
1029 | } | |
1030 | while (c == ','); | |
1031 | demand_empty_rest_of_line (); | |
40324362 | 1032 | } |
6efd877d KR |
1033 | |
1034 | void | |
1035 | s_lcomm (needs_align) | |
c8863a58 KR |
1036 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1037 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1038 | int needs_align; | |
fecd2382 | 1039 | { |
6efd877d KR |
1040 | register char *name; |
1041 | register char c; | |
1042 | register char *p; | |
1043 | register int temp; | |
1044 | register symbolS *symbolP; | |
9a7d824a ILT |
1045 | segT current_seg = now_seg; |
1046 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1047 | const int max_alignment = 15; |
1048 | int align = 0; | |
9a7d824a | 1049 | segT bss_seg = bss_section; |
6efd877d KR |
1050 | |
1051 | name = input_line_pointer; | |
1052 | c = get_symbol_end (); | |
1053 | p = input_line_pointer; | |
1054 | *p = c; | |
1055 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1056 | |
1057 | /* Accept an optional comma after the name. The comma used to be | |
1058 | required, but Irix 5 cc does not generate it. */ | |
1059 | if (*input_line_pointer == ',') | |
6efd877d | 1060 | { |
46b81190 ILT |
1061 | ++input_line_pointer; |
1062 | SKIP_WHITESPACE (); | |
6efd877d | 1063 | } |
f8701a3f | 1064 | |
6efd877d KR |
1065 | if (*input_line_pointer == '\n') |
1066 | { | |
1067 | as_bad ("Missing size expression"); | |
1068 | return; | |
1069 | } | |
f8701a3f | 1070 | |
6efd877d KR |
1071 | if ((temp = get_absolute_expression ()) < 0) |
1072 | { | |
1073 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1074 | ignore_rest_of_line (); | |
1075 | return; | |
1076 | } | |
f8701a3f | 1077 | |
9a7d824a | 1078 | #ifdef TC_MIPS |
efe8ef02 ILT |
1079 | #if defined (OBJ_ECOFF) || defined (OBJ_ELF) |
1080 | /* For MIPS ECOFF or ELF, small objects are put in .sbss. */ | |
9a7d824a | 1081 | if (temp <= bfd_get_gp_size (stdoutput)) |
46b81190 ILT |
1082 | { |
1083 | bss_seg = subseg_new (".sbss", 1); | |
1084 | seg_info (bss_seg)->bss = 1; | |
1085 | } | |
9a7d824a ILT |
1086 | #endif |
1087 | #endif | |
1088 | ||
6efd877d KR |
1089 | if (needs_align) |
1090 | { | |
1091 | align = 0; | |
1092 | SKIP_WHITESPACE (); | |
1093 | if (*input_line_pointer != ',') | |
1094 | { | |
1095 | as_bad ("Expected comma after size"); | |
1096 | ignore_rest_of_line (); | |
1097 | return; | |
1098 | } | |
1099 | input_line_pointer++; | |
1100 | SKIP_WHITESPACE (); | |
1101 | if (*input_line_pointer == '\n') | |
1102 | { | |
1103 | as_bad ("Missing alignment"); | |
1104 | return; | |
1105 | } | |
1106 | align = get_absolute_expression (); | |
1107 | if (align > max_alignment) | |
1108 | { | |
1109 | align = max_alignment; | |
1110 | as_warn ("Alignment too large: %d. assumed.", align); | |
1111 | } | |
1112 | else if (align < 0) | |
1113 | { | |
1114 | align = 0; | |
1115 | as_warn ("Alignment negative. 0 assumed."); | |
1116 | } | |
9a7d824a | 1117 | record_alignment (bss_seg, align); |
6efd877d | 1118 | } /* if needs align */ |
f8701a3f | 1119 | |
6efd877d KR |
1120 | *p = 0; |
1121 | symbolP = symbol_find_or_make (name); | |
1122 | *p = c; | |
f8701a3f | 1123 | |
6efd877d | 1124 | if ( |
fecd2382 | 1125 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1126 | S_GET_OTHER (symbolP) == 0 && |
1127 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1128 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1129 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1130 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1131 | { | |
604633ae | 1132 | char *pfrag; |
85825401 | 1133 | |
9a7d824a | 1134 | subseg_set (bss_seg, 1); |
85825401 ILT |
1135 | |
1136 | if (align) | |
1137 | frag_align (align, 0); | |
1138 | /* detach from old frag */ | |
9a7d824a | 1139 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1140 | symbolP->sy_frag->fr_symbol = NULL; |
1141 | ||
1142 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1143 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1144 | temp, (char *)0); | |
1145 | *pfrag = 0; | |
f8701a3f | 1146 | |
9a7d824a | 1147 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1148 | |
fecd2382 | 1149 | #ifdef OBJ_COFF |
6efd877d | 1150 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1151 | ".globl" directive -- be careful not to step on storage class |
1152 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1153 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1154 | { | |
1155 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1156 | } |
6efd877d | 1157 | #endif /* OBJ_COFF */ |
6efd877d KR |
1158 | } |
1159 | else | |
1160 | { | |
85825401 | 1161 | as_bad ("Ignoring attempt to re-define symbol %s.", name); |
6efd877d | 1162 | } |
f8701a3f | 1163 | |
9a7d824a | 1164 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1165 | |
1166 | demand_empty_rest_of_line (); | |
6efd877d | 1167 | } /* s_lcomm() */ |
fecd2382 | 1168 | |
6efd877d | 1169 | void |
604633ae ILT |
1170 | s_lsym (ignore) |
1171 | int ignore; | |
6efd877d KR |
1172 | { |
1173 | register char *name; | |
1174 | register char c; | |
1175 | register char *p; | |
6efd877d KR |
1176 | expressionS exp; |
1177 | register symbolS *symbolP; | |
1178 | ||
1179 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1180 | name = input_line_pointer; | |
1181 | c = get_symbol_end (); | |
1182 | p = input_line_pointer; | |
1183 | *p = c; | |
1184 | SKIP_WHITESPACE (); | |
1185 | if (*input_line_pointer != ',') | |
1186 | { | |
1187 | *p = 0; | |
1188 | as_bad ("Expected comma after name \"%s\"", name); | |
1189 | *p = c; | |
1190 | ignore_rest_of_line (); | |
1191 | return; | |
1192 | } | |
1193 | input_line_pointer++; | |
b31f2abb KR |
1194 | expression (&exp); |
1195 | if (exp.X_op != O_constant | |
1196 | && exp.X_op != O_register) | |
1197 | { | |
1198 | as_bad ("bad expression"); | |
1199 | ignore_rest_of_line (); | |
1200 | return; | |
1201 | } | |
6efd877d KR |
1202 | *p = 0; |
1203 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1204 | |
c8863a58 KR |
1205 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1206 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1207 | those fields, and I can't see when they'd ever be tripped. I | |
1208 | don't think I understand why they were here so I may have | |
1209 | introduced a bug. As recently as 1.37 didn't have this test | |
1210 | anyway. xoxorich. */ | |
f8701a3f | 1211 | |
9471a360 | 1212 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
1213 | && S_GET_VALUE (symbolP) == 0) |
1214 | { | |
c8863a58 KR |
1215 | /* The name might be an undefined .global symbol; be sure to |
1216 | keep the "external" bit. */ | |
b31f2abb KR |
1217 | S_SET_SEGMENT (symbolP, |
1218 | (exp.X_op == O_constant | |
1219 | ? absolute_section | |
1220 | : reg_section)); | |
1221 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
1222 | } |
1223 | else | |
1224 | { | |
1225 | as_bad ("Symbol %s already defined", name); | |
1226 | } | |
1227 | *p = c; | |
1228 | demand_empty_rest_of_line (); | |
1229 | } /* s_lsym() */ | |
1230 | ||
1231 | void | |
604633ae ILT |
1232 | s_org (ignore) |
1233 | int ignore; | |
6efd877d KR |
1234 | { |
1235 | register segT segment; | |
1236 | expressionS exp; | |
1237 | register long temp_fill; | |
1238 | register char *p; | |
9471a360 KR |
1239 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
1240 | thing as a sub-segment-relative origin. Any absolute origin is | |
1241 | given a warning, then assumed to be segment-relative. Any | |
1242 | segmented origin expression ("foo+42") had better be in the right | |
1243 | segment or the .org is ignored. | |
1244 | ||
1245 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
1246 | we never know sub-segment sizes when we are reading code. BSD | |
1247 | will crash trying to emit negative numbers of filler bytes in | |
1248 | certain .orgs. We don't crash, but see as-write for that code. | |
1249 | ||
1250 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
1251 | segment = get_known_segmented_expression (&exp); |
1252 | if (*input_line_pointer == ',') | |
1253 | { | |
1254 | input_line_pointer++; | |
1255 | temp_fill = get_absolute_expression (); | |
1256 | } | |
1257 | else | |
1258 | temp_fill = 0; | |
1259 | if (!need_pass_2) | |
1260 | { | |
9471a360 | 1261 | if (segment != now_seg && segment != absolute_section) |
6efd877d KR |
1262 | as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.", |
1263 | segment_name (segment), segment_name (now_seg)); | |
1264 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
1265 | exp.X_add_number, (char *) 0); | |
1266 | *p = temp_fill; | |
1267 | } /* if (ok to make frag) */ | |
1268 | demand_empty_rest_of_line (); | |
1269 | } /* s_org() */ | |
1270 | ||
1271 | void | |
604633ae ILT |
1272 | s_set (ignore) |
1273 | int ignore; | |
6efd877d KR |
1274 | { |
1275 | register char *name; | |
1276 | register char delim; | |
1277 | register char *end_name; | |
1278 | register symbolS *symbolP; | |
1279 | ||
1280 | /* | |
c8863a58 KR |
1281 | * Especial apologies for the random logic: |
1282 | * this just grew, and could be parsed much more simply! | |
1283 | * Dean in haste. | |
1284 | */ | |
6efd877d KR |
1285 | name = input_line_pointer; |
1286 | delim = get_symbol_end (); | |
1287 | end_name = input_line_pointer; | |
1288 | *end_name = delim; | |
1289 | SKIP_WHITESPACE (); | |
f8701a3f | 1290 | |
6efd877d KR |
1291 | if (*input_line_pointer != ',') |
1292 | { | |
1293 | *end_name = 0; | |
1294 | as_bad ("Expected comma after name \"%s\"", name); | |
1295 | *end_name = delim; | |
1296 | ignore_rest_of_line (); | |
1297 | return; | |
1298 | } | |
1299 | ||
1300 | input_line_pointer++; | |
1301 | *end_name = 0; | |
1302 | ||
1303 | if (name[0] == '.' && name[1] == '\0') | |
1304 | { | |
1305 | /* Turn '. = mumble' into a .org mumble */ | |
1306 | register segT segment; | |
1307 | expressionS exp; | |
1308 | register char *ptr; | |
1309 | ||
1310 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 1311 | |
6efd877d KR |
1312 | if (!need_pass_2) |
1313 | { | |
9471a360 | 1314 | if (segment != now_seg && segment != absolute_section) |
6efd877d KR |
1315 | as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.", |
1316 | segment_name (segment), | |
1317 | segment_name (now_seg)); | |
1318 | ptr = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
1319 | exp.X_add_number, (char *) 0); | |
1320 | *ptr = 0; | |
1321 | } /* if (ok to make frag) */ | |
1322 | ||
1323 | *end_name = delim; | |
1324 | return; | |
1325 | } | |
1326 | ||
1327 | if ((symbolP = symbol_find (name)) == NULL | |
1328 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
1329 | { | |
9471a360 | 1330 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 1331 | #ifdef OBJ_COFF |
6efd877d KR |
1332 | /* "set" symbols are local unless otherwise specified. */ |
1333 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 1334 | #endif /* OBJ_COFF */ |
f8701a3f | 1335 | |
6efd877d | 1336 | } /* make a new symbol */ |
f8701a3f | 1337 | |
6efd877d | 1338 | symbol_table_insert (symbolP); |
f8701a3f | 1339 | |
6efd877d KR |
1340 | *end_name = delim; |
1341 | pseudo_set (symbolP); | |
1342 | demand_empty_rest_of_line (); | |
1343 | } /* s_set() */ | |
fecd2382 | 1344 | |
6efd877d KR |
1345 | void |
1346 | s_space (mult) | |
1347 | int mult; | |
b53ccaac | 1348 | { |
6efd877d KR |
1349 | long temp_repeat; |
1350 | register long temp_fill; | |
1351 | register char *p; | |
1352 | ||
1353 | /* Just like .fill, but temp_size = 1 */ | |
1354 | if (get_absolute_expression_and_terminator (&temp_repeat) == ',') | |
1355 | { | |
1356 | temp_fill = get_absolute_expression (); | |
1357 | } | |
1358 | else | |
1359 | { | |
1360 | input_line_pointer--; /* Backup over what was not a ','. */ | |
1361 | temp_fill = 0; | |
1362 | } | |
1363 | if (mult) | |
1364 | { | |
bf449293 | 1365 | temp_repeat *= mult; |
6efd877d KR |
1366 | } |
1367 | if (temp_repeat <= 0) | |
1368 | { | |
1369 | as_warn ("Repeat < 0, .space ignored"); | |
1370 | ignore_rest_of_line (); | |
1371 | return; | |
1372 | } | |
1373 | if (!need_pass_2) | |
1374 | { | |
1375 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
1376 | temp_repeat, (char *) 0); | |
1377 | *p = temp_fill; | |
1378 | } | |
1379 | demand_empty_rest_of_line (); | |
1380 | } /* s_space() */ | |
fecd2382 RP |
1381 | |
1382 | void | |
604633ae ILT |
1383 | s_text (ignore) |
1384 | int ignore; | |
fecd2382 | 1385 | { |
6efd877d | 1386 | register int temp; |
f8701a3f | 1387 | |
6efd877d | 1388 | temp = get_absolute_expression (); |
9471a360 | 1389 | subseg_set (text_section, (subsegT) temp); |
6efd877d KR |
1390 | demand_empty_rest_of_line (); |
1391 | } /* s_text() */ | |
fecd2382 | 1392 | \f |
6efd877d | 1393 | |
6efd877d KR |
1394 | void |
1395 | demand_empty_rest_of_line () | |
1396 | { | |
1397 | SKIP_WHITESPACE (); | |
58d4951d | 1398 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
1399 | { |
1400 | input_line_pointer++; | |
1401 | } | |
1402 | else | |
1403 | { | |
1404 | ignore_rest_of_line (); | |
1405 | } | |
1406 | /* Return having already swallowed end-of-line. */ | |
1407 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
1408 | |
1409 | void | |
6efd877d | 1410 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 1411 | { |
58d4951d | 1412 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 1413 | { |
6efd877d KR |
1414 | if (isprint (*input_line_pointer)) |
1415 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
1416 | *input_line_pointer); |
1417 | else | |
6efd877d | 1418 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
1419 | *input_line_pointer); |
1420 | while (input_line_pointer < buffer_limit | |
58d4951d | 1421 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 1422 | { |
6efd877d | 1423 | input_line_pointer++; |
f8701a3f SC |
1424 | } |
1425 | } | |
6efd877d | 1426 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 1427 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
1428 | } |
1429 | ||
1430 | /* | |
1431 | * pseudo_set() | |
1432 | * | |
1433 | * In: Pointer to a symbol. | |
1434 | * Input_line_pointer->expression. | |
1435 | * | |
1436 | * Out: Input_line_pointer->just after any whitespace after expression. | |
1437 | * Tried to set symbol to value of expression. | |
1438 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
1439 | */ |
1440 | void | |
f8701a3f | 1441 | pseudo_set (symbolP) |
6efd877d | 1442 | symbolS *symbolP; |
fecd2382 | 1443 | { |
6efd877d | 1444 | expressionS exp; |
fecd2382 | 1445 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
f8701a3f | 1446 | int ext; |
fecd2382 | 1447 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1448 | |
6efd877d | 1449 | know (symbolP); /* NULL pointer is logic error. */ |
fecd2382 | 1450 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
9471a360 | 1451 | /* @@ Fix this right for BFD. */ |
6efd877d | 1452 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 1453 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1454 | |
5ac34ac3 | 1455 | (void) expression (&exp); |
f8701a3f | 1456 | |
5ac34ac3 ILT |
1457 | if (exp.X_op == O_illegal) |
1458 | as_bad ("illegal expression; zero assumed"); | |
1459 | else if (exp.X_op == O_absent) | |
1460 | as_bad ("missing expression; zero assumed"); | |
1461 | else if (exp.X_op == O_big) | |
1462 | as_bad ("%s number invalid; zero assumed", | |
1463 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
1464 | else if (exp.X_op == O_subtract | |
1465 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
1466 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
1467 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
1468 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 1469 | { |
5ac34ac3 ILT |
1470 | exp.X_op = O_constant; |
1471 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
1472 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 1473 | } |
5ac34ac3 ILT |
1474 | |
1475 | switch (exp.X_op) | |
9471a360 | 1476 | { |
5ac34ac3 ILT |
1477 | case O_illegal: |
1478 | case O_absent: | |
1479 | case O_big: | |
1480 | exp.X_add_number = 0; | |
1481 | /* Fall through. */ | |
1482 | case O_constant: | |
9471a360 | 1483 | S_SET_SEGMENT (symbolP, absolute_section); |
fecd2382 | 1484 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
9471a360 | 1485 | /* @@ Fix this right for BFD. */ |
5ac34ac3 ILT |
1486 | if (ext) |
1487 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 1488 | else |
6efd877d | 1489 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 1490 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 1491 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 1492 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 1493 | break; |
f8701a3f | 1494 | |
5ac34ac3 ILT |
1495 | case O_register: |
1496 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 1497 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
1498 | symbolP->sy_frag = &zero_address_frag; |
1499 | break; | |
1500 | ||
1501 | case O_symbol: | |
1502 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) | |
1503 | symbolP->sy_value = exp; | |
6efd877d KR |
1504 | else |
1505 | { | |
5ac34ac3 ILT |
1506 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (exp.X_add_symbol)); |
1507 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) | |
1508 | /* @@ Fix this right for BFD! */ | |
1509 | if (ext) | |
1510 | S_SET_EXTERNAL (symbolP); | |
1511 | else | |
1512 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 1513 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 ILT |
1514 | S_SET_VALUE (symbolP, |
1515 | exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); | |
1516 | symbolP->sy_frag = exp.X_add_symbol->sy_frag; | |
1517 | } | |
1518 | break; | |
f8701a3f | 1519 | |
5ac34ac3 ILT |
1520 | default: |
1521 | /* The value is some complex expression. | |
1522 | FIXME: Should we set the segment to anything? */ | |
1523 | symbolP->sy_value = exp; | |
1524 | break; | |
f8701a3f | 1525 | } |
fecd2382 RP |
1526 | } |
1527 | \f | |
1528 | /* | |
1529 | * cons() | |
1530 | * | |
1531 | * CONStruct more frag of .bytes, or .words etc. | |
1532 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 1533 | * This understands EXPRESSIONS. |
fecd2382 RP |
1534 | * |
1535 | * Bug (?) | |
1536 | * | |
1537 | * This has a split personality. We use expression() to read the | |
1538 | * value. We can detect if the value won't fit in a byte or word. | |
1539 | * But we can't detect if expression() discarded significant digits | |
1540 | * in the case of a long. Not worth the crocks required to fix it. | |
1541 | */ | |
1542 | ||
40324362 KR |
1543 | /* Select a parser for cons expressions. */ |
1544 | ||
1545 | /* Some targets need to parse the expression in various fancy ways. | |
1546 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
1547 | (for example, the HPPA does this). Otherwise, you can define | |
1548 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
1549 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
1550 | are defined, which is the normal case, then only simple expressions | |
1551 | are permitted. */ | |
1552 | ||
1553 | #ifndef TC_PARSE_CONS_EXPRESSION | |
1554 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
1555 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
1556 | static void | |
1557 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
1558 | #endif | |
1559 | #ifdef MRI | |
1560 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_mri_cons (EXP) | |
1561 | static void | |
1562 | parse_mri_cons PARAMS ((expressionS *exp)); | |
1563 | #endif | |
1564 | #ifdef REPEAT_CONS_EXPRESSIONS | |
1565 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
1566 | static void | |
1567 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
1568 | #endif | |
1569 | ||
1570 | /* If we haven't gotten one yet, just call expression. */ | |
1571 | #ifndef TC_PARSE_CONS_EXPRESSION | |
1572 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
1573 | #endif | |
1574 | #endif | |
1575 | ||
6efd877d KR |
1576 | /* worker to do .byte etc statements */ |
1577 | /* clobbers input_line_pointer, checks */ | |
1578 | /* end-of-line. */ | |
1579 | void | |
1580 | cons (nbytes) | |
604633ae | 1581 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
fecd2382 | 1582 | { |
6efd877d | 1583 | expressionS exp; |
f8701a3f | 1584 | |
40324362 | 1585 | if (is_it_end_of_statement ()) |
6efd877d | 1586 | { |
40324362 KR |
1587 | demand_empty_rest_of_line (); |
1588 | return; | |
6efd877d | 1589 | } |
40324362 KR |
1590 | |
1591 | do | |
6efd877d | 1592 | { |
604633ae ILT |
1593 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
1594 | emit_expr (&exp, (unsigned int) nbytes); | |
40324362 KR |
1595 | } |
1596 | while (*input_line_pointer++ == ','); | |
1597 | ||
1598 | input_line_pointer--; /* Put terminator back into stream. */ | |
1599 | demand_empty_rest_of_line (); | |
1600 | } /* cons() */ | |
f8701a3f | 1601 | |
40324362 KR |
1602 | /* Put the contents of expression EXP into the object file using |
1603 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 1604 | |
40324362 KR |
1605 | void |
1606 | emit_expr (exp, nbytes) | |
1607 | expressionS *exp; | |
1608 | unsigned int nbytes; | |
1609 | { | |
5ac34ac3 | 1610 | operatorT op; |
40324362 | 1611 | register char *p; |
80aab579 | 1612 | valueT extra_digit = 0; |
f8701a3f | 1613 | |
40324362 KR |
1614 | /* Don't do anything if we are going to make another pass. */ |
1615 | if (need_pass_2) | |
1616 | return; | |
1617 | ||
5ac34ac3 | 1618 | op = exp->X_op; |
40324362 | 1619 | |
80aab579 ILT |
1620 | /* Handle a negative bignum. */ |
1621 | if (op == O_uminus | |
1622 | && exp->X_add_number == 0 | |
1623 | && exp->X_add_symbol->sy_value.X_op == O_big | |
1624 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
1625 | { | |
1626 | int i; | |
1627 | unsigned long carry; | |
1628 | ||
1629 | exp = &exp->X_add_symbol->sy_value; | |
1630 | ||
1631 | /* Negate the bignum: one's complement each digit and add 1. */ | |
1632 | carry = 1; | |
1633 | for (i = 0; i < exp->X_add_number; i++) | |
1634 | { | |
1635 | unsigned long next; | |
1636 | ||
1637 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
1638 | & LITTLENUM_MASK) | |
1639 | + carry); | |
1640 | generic_bignum[i] = next & LITTLENUM_MASK; | |
1641 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
1642 | } | |
1643 | ||
1644 | /* We can ignore any carry out, because it will be handled by | |
1645 | extra_digit if it is needed. */ | |
1646 | ||
1647 | extra_digit = (valueT) -1; | |
1648 | op = O_big; | |
1649 | } | |
1650 | ||
5ac34ac3 | 1651 | if (op == O_absent || op == O_illegal) |
6efd877d | 1652 | { |
5ac34ac3 ILT |
1653 | as_warn ("zero assumed for missing expression"); |
1654 | exp->X_add_number = 0; | |
1655 | op = O_constant; | |
6efd877d | 1656 | } |
80aab579 | 1657 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 1658 | { |
80aab579 | 1659 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 1660 | exp->X_add_number = 0; |
5ac34ac3 | 1661 | op = O_constant; |
40324362 | 1662 | } |
5ac34ac3 | 1663 | else if (op == O_register) |
6efd877d | 1664 | { |
5ac34ac3 ILT |
1665 | as_warn ("register value used as expression"); |
1666 | op = O_constant; | |
40324362 | 1667 | } |
6efd877d | 1668 | |
604633ae | 1669 | p = frag_more ((int) nbytes); |
6efd877d | 1670 | |
40324362 KR |
1671 | #ifndef WORKING_DOT_WORD |
1672 | /* If we have the difference of two symbols in a word, save it on | |
1673 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 1674 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
1675 | { |
1676 | struct broken_word *x; | |
1677 | ||
1678 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
1679 | x->next_broken_word = broken_words; | |
1680 | broken_words = x; | |
1681 | x->frag = frag_now; | |
1682 | x->word_goes_here = p; | |
1683 | x->dispfrag = 0; | |
1684 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 1685 | x->sub = exp->X_op_symbol; |
40324362 KR |
1686 | x->addnum = exp->X_add_number; |
1687 | x->added = 0; | |
1688 | new_broken_words++; | |
1689 | return; | |
1690 | } | |
f8701a3f | 1691 | #endif |
6efd877d | 1692 | |
80aab579 ILT |
1693 | /* If we have an integer, but the number of bytes is too large to |
1694 | pass to md_number_to_chars, handle it as a bignum. */ | |
1695 | if (op == O_constant && nbytes > sizeof (valueT)) | |
1696 | { | |
1697 | valueT val; | |
1698 | int gencnt; | |
1699 | ||
1700 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
1701 | extra_digit = (valueT) -1; | |
1702 | val = (valueT) exp->X_add_number; | |
1703 | gencnt = 0; | |
1704 | do | |
1705 | { | |
1706 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
1707 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
1708 | ++gencnt; | |
1709 | } | |
1710 | while (val != 0); | |
1711 | op = exp->X_op = O_big; | |
1712 | exp->X_add_number = gencnt; | |
1713 | } | |
1714 | ||
5ac34ac3 | 1715 | if (op == O_constant) |
40324362 KR |
1716 | { |
1717 | register long get; | |
1718 | register long use; | |
1719 | register long mask; | |
1720 | register long unmask; | |
1721 | ||
1722 | /* JF << of >= number of bits in the object is undefined. In | |
1723 | particular SPARC (Sun 4) has problems */ | |
1724 | if (nbytes >= sizeof (long)) | |
1725 | mask = 0; | |
1726 | else | |
1727 | mask = ~0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ | |
6efd877d | 1728 | |
40324362 | 1729 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 1730 | |
40324362 KR |
1731 | #ifdef NEVER |
1732 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
1733 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
1734 | #endif | |
6efd877d | 1735 | |
40324362 KR |
1736 | get = exp->X_add_number; |
1737 | use = get & unmask; | |
1738 | if ((get & mask) != 0 && (get & mask) != mask) | |
1739 | { /* Leading bits contain both 0s & 1s. */ | |
58d4951d | 1740 | as_warn ("Value 0x%lx truncated to 0x%lx.", get, use); |
40324362 | 1741 | } |
604633ae ILT |
1742 | /* put bytes in right order. */ |
1743 | md_number_to_chars (p, (valueT) use, (int) nbytes); | |
40324362 | 1744 | } |
80aab579 ILT |
1745 | else if (op == O_big) |
1746 | { | |
1747 | int size; | |
1748 | LITTLENUM_TYPE *nums; | |
1749 | ||
1750 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
1751 | ||
1752 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
1753 | if (nbytes < size) | |
1754 | { | |
1755 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
1756 | size = nbytes; | |
1757 | } | |
1758 | ||
1759 | if (target_big_endian) | |
1760 | { | |
1761 | while (nbytes > size) | |
1762 | { | |
1763 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
1764 | nbytes -= CHARS_PER_LITTLENUM; | |
1765 | p += CHARS_PER_LITTLENUM; | |
1766 | } | |
1767 | ||
1768 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
1769 | while (size > 0) | |
1770 | { | |
1771 | --nums; | |
1772 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
1773 | size -= CHARS_PER_LITTLENUM; | |
1774 | p += CHARS_PER_LITTLENUM; | |
1775 | } | |
1776 | } | |
1777 | else | |
1778 | { | |
1779 | nums = generic_bignum; | |
1780 | while (size > 0) | |
1781 | { | |
1782 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
1783 | ++nums; | |
1784 | size -= CHARS_PER_LITTLENUM; | |
1785 | p += CHARS_PER_LITTLENUM; | |
1786 | nbytes -= CHARS_PER_LITTLENUM; | |
1787 | } | |
1788 | ||
1789 | while (nbytes > 0) | |
1790 | { | |
1791 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
1792 | nbytes -= CHARS_PER_LITTLENUM; | |
1793 | p += CHARS_PER_LITTLENUM; | |
1794 | } | |
1795 | } | |
1796 | } | |
40324362 KR |
1797 | else |
1798 | { | |
604633ae | 1799 | md_number_to_chars (p, (valueT) 0, (int) nbytes); |
6efd877d | 1800 | |
40324362 KR |
1801 | /* Now we need to generate a fixS to record the symbol value. |
1802 | This is easy for BFD. For other targets it can be more | |
1803 | complex. For very complex cases (currently, the HPPA and | |
1804 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
1805 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
1806 | the name of the reloc code that should be stored in the fixS. | |
1807 | If neither is defined, the code uses NO_RELOC if it is | |
1808 | defined, and otherwise uses 0. */ | |
6efd877d | 1809 | |
40324362 | 1810 | #ifdef BFD_ASSEMBLER |
4064305e SS |
1811 | #ifdef TC_CONS_FIX_NEW |
1812 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
1813 | #else | |
604633ae | 1814 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 1815 | /* @@ Should look at CPU word size. */ |
ba71c54d KR |
1816 | nbytes == 2 ? BFD_RELOC_16 |
1817 | : nbytes == 8 ? BFD_RELOC_64 | |
1818 | : BFD_RELOC_32); | |
4064305e | 1819 | #endif |
40324362 KR |
1820 | #else |
1821 | #ifdef TC_CONS_FIX_NEW | |
1822 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
1823 | #else | |
1824 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
1825 | it is defined, otherwise use NO_RELOC if it is defined, | |
1826 | otherwise use 0. */ | |
1827 | #ifndef TC_CONS_RELOC | |
1828 | #ifdef NO_RELOC | |
1829 | #define TC_CONS_RELOC NO_RELOC | |
1830 | #else | |
1831 | #define TC_CONS_RELOC 0 | |
1832 | #endif | |
1833 | #endif | |
80aab579 | 1834 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 1835 | TC_CONS_RELOC); |
40324362 KR |
1836 | #endif /* TC_CONS_FIX_NEW */ |
1837 | #endif /* BFD_ASSEMBLER */ | |
1838 | } | |
1839 | } | |
1840 | \f | |
1841 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 1842 | |
40324362 KR |
1843 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
1844 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
1845 | then pack them all together. We do a little better in that we allow | |
1846 | them in words, longs, etc. and we'll pack them in target byte order | |
1847 | for you. | |
6efd877d | 1848 | |
40324362 KR |
1849 | The rules are: pack least significat bit first, if a field doesn't |
1850 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
1851 | explicitly *not* even a warning. The bitwidth should be considered | |
1852 | a "mask". | |
6efd877d | 1853 | |
40324362 KR |
1854 | To use this function the tc-XXX.h file should define |
1855 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 1856 | |
40324362 KR |
1857 | static void |
1858 | parse_bitfield_cons (exp, nbytes) | |
1859 | expressionS *exp; | |
1860 | unsigned int nbytes; | |
1861 | { | |
1862 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
1863 | char *hold = input_line_pointer; | |
f8701a3f | 1864 | |
5ac34ac3 | 1865 | (void) expression (exp); |
f8701a3f | 1866 | |
40324362 KR |
1867 | if (*input_line_pointer == ':') |
1868 | { /* bitfields */ | |
1869 | long value = 0; | |
f8701a3f | 1870 | |
40324362 KR |
1871 | for (;;) |
1872 | { | |
1873 | unsigned long width; | |
f8701a3f | 1874 | |
40324362 KR |
1875 | if (*input_line_pointer != ':') |
1876 | { | |
1877 | input_line_pointer = hold; | |
1878 | break; | |
1879 | } /* next piece is not a bitfield */ | |
1880 | ||
1881 | /* In the general case, we can't allow | |
1882 | full expressions with symbol | |
1883 | differences and such. The relocation | |
1884 | entries for symbols not defined in this | |
1885 | assembly would require arbitrary field | |
1886 | widths, positions, and masks which most | |
1887 | of our current object formats don't | |
1888 | support. | |
1889 | ||
1890 | In the specific case where a symbol | |
1891 | *is* defined in this assembly, we | |
1892 | *could* build fixups and track it, but | |
1893 | this could lead to confusion for the | |
1894 | backends. I'm lazy. I'll take any | |
1895 | SEG_ABSOLUTE. I think that means that | |
1896 | you can use a previous .set or | |
1897 | .equ type symbol. xoxorich. */ | |
1898 | ||
5ac34ac3 | 1899 | if (exp->X_op == O_absent) |
6efd877d | 1900 | { |
5ac34ac3 | 1901 | as_warn ("using a bit field width of zero"); |
40324362 | 1902 | exp->X_add_number = 0; |
5ac34ac3 | 1903 | exp->X_op = O_constant; |
40324362 KR |
1904 | } /* implied zero width bitfield */ |
1905 | ||
5ac34ac3 | 1906 | if (exp->X_op != O_constant) |
6efd877d | 1907 | { |
40324362 | 1908 | *input_line_pointer = '\0'; |
5ac34ac3 | 1909 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
1910 | *input_line_pointer = ':'; |
1911 | demand_empty_rest_of_line (); | |
1912 | return; | |
1913 | } /* too complex */ | |
1914 | ||
1915 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 1916 | { |
80aab579 | 1917 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
1918 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
1919 | width = BITS_PER_CHAR * nbytes; | |
1920 | } /* too big */ | |
1921 | ||
1922 | if (width > bits_available) | |
9471a360 | 1923 | { |
40324362 KR |
1924 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
1925 | input_line_pointer = hold; | |
1926 | exp->X_add_number = value; | |
1927 | break; | |
1928 | } /* won't fit */ | |
1929 | ||
1930 | hold = ++input_line_pointer; /* skip ':' */ | |
1931 | ||
5ac34ac3 ILT |
1932 | (void) expression (exp); |
1933 | if (exp->X_op != O_constant) | |
9471a360 | 1934 | { |
40324362 KR |
1935 | char cache = *input_line_pointer; |
1936 | ||
1937 | *input_line_pointer = '\0'; | |
5ac34ac3 | 1938 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
1939 | *input_line_pointer = cache; |
1940 | demand_empty_rest_of_line (); | |
1941 | return; | |
1942 | } /* too complex */ | |
1943 | ||
5ac34ac3 ILT |
1944 | value |= ((~(-1 << width) & exp->X_add_number) |
1945 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
1946 | |
1947 | if ((bits_available -= width) == 0 | |
1948 | || is_it_end_of_statement () | |
1949 | || *input_line_pointer != ',') | |
1950 | { | |
1951 | break; | |
1952 | } /* all the bitfields we're gonna get */ | |
1953 | ||
1954 | hold = ++input_line_pointer; | |
5ac34ac3 | 1955 | (void) expression (exp); |
40324362 KR |
1956 | } /* forever loop */ |
1957 | ||
1958 | exp->X_add_number = value; | |
5ac34ac3 | 1959 | exp->X_op = O_constant; |
80aab579 | 1960 | exp->X_unsigned = 1; |
40324362 KR |
1961 | } /* if looks like a bitfield */ |
1962 | } /* parse_bitfield_cons() */ | |
1963 | ||
1964 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
1965 | \f | |
1966 | #ifdef MRI | |
1967 | ||
1968 | static void | |
1969 | parse_mri_cons (exp, nbytes) | |
1970 | expressionS *exp; | |
1971 | unsigned int nbytes; | |
1972 | { | |
1973 | if (*input_line_pointer == '\'') | |
1974 | { | |
1975 | /* An MRI style string, cut into as many bytes as will fit into | |
1976 | a nbyte chunk, left justify if necessary, and separate with | |
1977 | commas so we can try again later */ | |
1978 | int scan = 0; | |
1979 | unsigned int result = 0; | |
1980 | input_line_pointer++; | |
1981 | for (scan = 0; scan < nbytes; scan++) | |
1982 | { | |
1983 | if (*input_line_pointer == '\'') | |
1984 | { | |
1985 | if (input_line_pointer[1] == '\'') | |
6efd877d | 1986 | { |
40324362 | 1987 | input_line_pointer++; |
f8701a3f | 1988 | } |
40324362 KR |
1989 | else |
1990 | break; | |
9471a360 | 1991 | } |
40324362 KR |
1992 | result = (result << 8) | (*input_line_pointer++); |
1993 | } | |
f8701a3f | 1994 | |
40324362 KR |
1995 | /* Left justify */ |
1996 | while (scan < nbytes) | |
1997 | { | |
1998 | result <<= 8; | |
1999 | scan++; | |
2000 | } | |
2001 | /* Create correct expression */ | |
5ac34ac3 | 2002 | exp->X_op = O_constant; |
40324362 | 2003 | exp->X_add_number = result; |
40324362 KR |
2004 | /* Fake it so that we can read the next char too */ |
2005 | if (input_line_pointer[0] != '\'' || | |
2006 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
2007 | { | |
2008 | input_line_pointer -= 2; | |
2009 | input_line_pointer[0] = ','; | |
2010 | input_line_pointer[1] = '\''; | |
2011 | } | |
2012 | else | |
2013 | input_line_pointer++; | |
2014 | } | |
2015 | else | |
2016 | expression (&exp); | |
2017 | } | |
2018 | ||
2019 | #endif /* MRI */ | |
2020 | \f | |
2021 | #ifdef REPEAT_CONS_EXPRESSIONS | |
2022 | ||
2023 | /* Parse a repeat expression for cons. This is used by the MIPS | |
2024 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
2025 | object file COUNT times. | |
2026 | ||
2027 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
2028 | ||
2029 | static void | |
2030 | parse_repeat_cons (exp, nbytes) | |
2031 | expressionS *exp; | |
2032 | unsigned int nbytes; | |
2033 | { | |
2034 | expressionS count; | |
40324362 KR |
2035 | register int i; |
2036 | ||
2037 | expression (exp); | |
2038 | ||
2039 | if (*input_line_pointer != ':') | |
2040 | { | |
2041 | /* No repeat count. */ | |
2042 | return; | |
2043 | } | |
2044 | ||
2045 | ++input_line_pointer; | |
5ac34ac3 ILT |
2046 | expression (&count); |
2047 | if (count.X_op != O_constant | |
40324362 KR |
2048 | || count.X_add_number <= 0) |
2049 | { | |
2050 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
2051 | return; | |
2052 | } | |
2053 | ||
2054 | /* The cons function is going to output this expression once. So we | |
2055 | output it count - 1 times. */ | |
2056 | for (i = count.X_add_number - 1; i > 0; i--) | |
2057 | emit_expr (exp, nbytes); | |
2058 | } | |
2059 | ||
2060 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 2061 | \f |
fecd2382 RP |
2062 | /* |
2063 | * float_cons() | |
2064 | * | |
2065 | * CONStruct some more frag chars of .floats .ffloats etc. | |
2066 | * Makes 0 or more new frags. | |
2067 | * If need_pass_2 == 1, no frags are emitted. | |
2068 | * This understands only floating literals, not expressions. Sorry. | |
2069 | * | |
2070 | * A floating constant is defined by atof_generic(), except it is preceded | |
2071 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
2072 | * reading, I decided to be incompatible. This always tries to give you | |
2073 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
2074 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
2075 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
2076 | * scanners you directed AS to use. | |
2077 | * | |
2078 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
2079 | * | |
2080 | */ | |
2081 | ||
ba71c54d KR |
2082 | void |
2083 | float_cons (float_type) | |
6efd877d | 2084 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 2085 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 2086 | { |
6efd877d | 2087 | register char *p; |
6efd877d KR |
2088 | int length; /* Number of chars in an object. */ |
2089 | register char *err; /* Error from scanning floating literal. */ | |
2090 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 2091 | |
6efd877d | 2092 | if (is_it_end_of_statement ()) |
f8701a3f | 2093 | { |
1e9cf565 ILT |
2094 | demand_empty_rest_of_line (); |
2095 | return; | |
f8701a3f | 2096 | } |
1e9cf565 ILT |
2097 | |
2098 | do | |
f8701a3f SC |
2099 | { |
2100 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 2101 | SKIP_WHITESPACE (); |
1e9cf565 | 2102 | |
f8701a3f SC |
2103 | /* Skip any 0{letter} that may be present. Don't even check if the |
2104 | * letter is legal. Someone may invent a "z" format and this routine | |
2105 | * has no use for such information. Lusers beware: you get | |
2106 | * diagnostics if your input is ill-conditioned. | |
2107 | */ | |
6efd877d KR |
2108 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
2109 | input_line_pointer += 2; | |
f8701a3f SC |
2110 | |
2111 | err = md_atof (float_type, temp, &length); | |
6efd877d KR |
2112 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); |
2113 | know (length > 0); | |
80aab579 | 2114 | if (err) |
f8701a3f | 2115 | { |
6efd877d KR |
2116 | as_bad ("Bad floating literal: %s", err); |
2117 | ignore_rest_of_line (); | |
1e9cf565 | 2118 | return; |
f8701a3f | 2119 | } |
1e9cf565 ILT |
2120 | |
2121 | if (!need_pass_2) | |
f8701a3f | 2122 | { |
1e9cf565 ILT |
2123 | int count; |
2124 | ||
2125 | count = 1; | |
2126 | ||
2127 | #ifdef REPEAT_CONS_EXPRESSIONS | |
2128 | if (*input_line_pointer == ':') | |
2129 | { | |
1e9cf565 ILT |
2130 | expressionS count_exp; |
2131 | ||
2132 | ++input_line_pointer; | |
5ac34ac3 ILT |
2133 | expression (&count_exp); |
2134 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
2135 | || count_exp.X_add_number <= 0) |
2136 | { | |
5ac34ac3 | 2137 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
2138 | } |
2139 | else | |
2140 | count = count_exp.X_add_number; | |
2141 | } | |
2142 | #endif | |
2143 | ||
2144 | while (--count >= 0) | |
a39116f1 | 2145 | { |
f8701a3f | 2146 | p = frag_more (length); |
604633ae | 2147 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 2148 | } |
542e1629 | 2149 | } |
1e9cf565 | 2150 | SKIP_WHITESPACE (); |
f8701a3f | 2151 | } |
1e9cf565 ILT |
2152 | while (*input_line_pointer++ == ','); |
2153 | ||
2154 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 2155 | demand_empty_rest_of_line (); |
f8701a3f | 2156 | } /* float_cons() */ |
fecd2382 RP |
2157 | \f |
2158 | /* | |
2159 | * stringer() | |
2160 | * | |
2161 | * We read 0 or more ',' seperated, double-quoted strings. | |
2162 | * | |
2163 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
2164 | */ | |
a39116f1 RP |
2165 | |
2166 | ||
6efd877d KR |
2167 | void |
2168 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
2169 | /* Checks end-of-line. */ | |
f8701a3f | 2170 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 2171 | { |
f8701a3f | 2172 | register unsigned int c; |
6efd877d | 2173 | |
f8701a3f SC |
2174 | /* |
2175 | * The following awkward logic is to parse ZERO or more strings, | |
2176 | * comma seperated. Recall a string expression includes spaces | |
2177 | * before the opening '\"' and spaces after the closing '\"'. | |
2178 | * We fake a leading ',' if there is (supposed to be) | |
2179 | * a 1st, expression. We keep demanding expressions for each | |
2180 | * ','. | |
2181 | */ | |
6efd877d KR |
2182 | if (is_it_end_of_statement ()) |
2183 | { | |
2184 | c = 0; /* Skip loop. */ | |
2185 | ++input_line_pointer; /* Compensate for end of loop. */ | |
2186 | } | |
f8701a3f | 2187 | else |
6efd877d KR |
2188 | { |
2189 | c = ','; /* Do loop. */ | |
2190 | } | |
2191 | while (c == ',' || c == '<' || c == '"') | |
2192 | { | |
2193 | SKIP_WHITESPACE (); | |
2194 | switch (*input_line_pointer) | |
2195 | { | |
2196 | case '\"': | |
2197 | ++input_line_pointer; /*->1st char of string. */ | |
2198 | while (is_a_char (c = next_char_of_string ())) | |
2199 | { | |
2200 | FRAG_APPEND_1_CHAR (c); | |
2201 | } | |
2202 | if (append_zero) | |
2203 | { | |
2204 | FRAG_APPEND_1_CHAR (0); | |
2205 | } | |
2206 | know (input_line_pointer[-1] == '\"'); | |
2207 | break; | |
2208 | case '<': | |
2209 | input_line_pointer++; | |
2210 | c = get_single_number (); | |
2211 | FRAG_APPEND_1_CHAR (c); | |
2212 | if (*input_line_pointer != '>') | |
2213 | { | |
2214 | as_bad ("Expected <nn>"); | |
2215 | } | |
2216 | input_line_pointer++; | |
2217 | break; | |
2218 | case ',': | |
2219 | input_line_pointer++; | |
2220 | break; | |
2221 | } | |
2222 | SKIP_WHITESPACE (); | |
2223 | c = *input_line_pointer; | |
f8701a3f | 2224 | } |
f8701a3f | 2225 | |
6efd877d KR |
2226 | demand_empty_rest_of_line (); |
2227 | } /* stringer() */ | |
fecd2382 | 2228 | \f |
6efd877d | 2229 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
2230 | high bits set. We'll probably also have trouble with |
2231 | multibyte chars, wide chars, etc. Also be careful about | |
2232 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 2233 | |
6efd877d KR |
2234 | unsigned int |
2235 | next_char_of_string () | |
2236 | { | |
2237 | register unsigned int c; | |
2238 | ||
2239 | c = *input_line_pointer++ & CHAR_MASK; | |
2240 | switch (c) | |
2241 | { | |
2242 | case '\"': | |
2243 | c = NOT_A_CHAR; | |
2244 | break; | |
2245 | ||
2246 | case '\\': | |
2247 | switch (c = *input_line_pointer++) | |
2248 | { | |
2249 | case 'b': | |
2250 | c = '\b'; | |
2251 | break; | |
2252 | ||
2253 | case 'f': | |
2254 | c = '\f'; | |
2255 | break; | |
2256 | ||
2257 | case 'n': | |
2258 | c = '\n'; | |
2259 | break; | |
2260 | ||
2261 | case 'r': | |
2262 | c = '\r'; | |
2263 | break; | |
2264 | ||
2265 | case 't': | |
2266 | c = '\t'; | |
2267 | break; | |
2268 | ||
fecd2382 | 2269 | #ifdef BACKSLASH_V |
6efd877d KR |
2270 | case 'v': |
2271 | c = '\013'; | |
2272 | break; | |
fecd2382 | 2273 | #endif |
6efd877d KR |
2274 | |
2275 | case '\\': | |
2276 | case '"': | |
2277 | break; /* As itself. */ | |
2278 | ||
2279 | case '0': | |
2280 | case '1': | |
2281 | case '2': | |
2282 | case '3': | |
2283 | case '4': | |
2284 | case '5': | |
2285 | case '6': | |
2286 | case '7': | |
2287 | case '8': | |
2288 | case '9': | |
2289 | { | |
2290 | long number; | |
d4c8cbd8 | 2291 | int i; |
6efd877d | 2292 | |
d4c8cbd8 | 2293 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
2294 | { |
2295 | number = number * 8 + c - '0'; | |
2296 | } | |
2297 | c = number & 0xff; | |
2298 | } | |
2299 | --input_line_pointer; | |
2300 | break; | |
2301 | ||
d4c8cbd8 JL |
2302 | case 'x': |
2303 | case 'X': | |
2304 | { | |
2305 | long number; | |
2306 | ||
2307 | number = 0; | |
2308 | c = *input_line_pointer++; | |
2309 | while (isxdigit (c)) | |
2310 | { | |
2311 | if (isdigit (c)) | |
2312 | number = number * 16 + c - '0'; | |
2313 | else if (isupper (c)) | |
2314 | number = number * 16 + c - 'A' + 10; | |
2315 | else | |
2316 | number = number * 16 + c - 'a' + 10; | |
2317 | c = *input_line_pointer++; | |
2318 | } | |
2319 | c = number & 0xff; | |
2320 | --input_line_pointer; | |
2321 | } | |
2322 | break; | |
2323 | ||
6efd877d KR |
2324 | case '\n': |
2325 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
2326 | as_warn ("Unterminated string: Newline inserted."); | |
2327 | c = '\n'; | |
2328 | break; | |
2329 | ||
2330 | default: | |
2331 | ||
fecd2382 | 2332 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
2333 | as_bad ("Bad escaped character in string, '?' assumed"); |
2334 | c = '?'; | |
fecd2382 | 2335 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
2336 | |
2337 | break; | |
2338 | } /* switch on escaped char */ | |
2339 | break; | |
2340 | ||
2341 | default: | |
2342 | break; | |
2343 | } /* switch on char */ | |
2344 | return (c); | |
2345 | } /* next_char_of_string() */ | |
fecd2382 RP |
2346 | \f |
2347 | static segT | |
f8701a3f | 2348 | get_segmented_expression (expP) |
6efd877d | 2349 | register expressionS *expP; |
fecd2382 | 2350 | { |
6efd877d | 2351 | register segT retval; |
f8701a3f | 2352 | |
9471a360 | 2353 | retval = expression (expP); |
5ac34ac3 ILT |
2354 | if (expP->X_op == O_illegal |
2355 | || expP->X_op == O_absent | |
2356 | || expP->X_op == O_big) | |
f8701a3f | 2357 | { |
5ac34ac3 ILT |
2358 | as_bad ("expected address expression; zero assumed"); |
2359 | expP->X_op = O_constant; | |
6efd877d | 2360 | expP->X_add_number = 0; |
5ac34ac3 | 2361 | retval = absolute_section; |
f8701a3f | 2362 | } |
5ac34ac3 | 2363 | return retval; |
fecd2382 RP |
2364 | } |
2365 | ||
6efd877d KR |
2366 | static segT |
2367 | get_known_segmented_expression (expP) | |
2368 | register expressionS *expP; | |
fecd2382 | 2369 | { |
6efd877d | 2370 | register segT retval; |
f8701a3f | 2371 | |
9471a360 | 2372 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 2373 | { |
5ac34ac3 ILT |
2374 | /* There is no easy way to extract the undefined symbol from the |
2375 | expression. */ | |
2376 | if (expP->X_add_symbol != NULL | |
2377 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
2378 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
2379 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 2380 | else |
5ac34ac3 ILT |
2381 | as_warn ("some symbol undefined; zero assumed"); |
2382 | retval = absolute_section; | |
2383 | expP->X_op = O_constant; | |
6efd877d | 2384 | expP->X_add_number = 0; |
f8701a3f | 2385 | } |
5ac34ac3 | 2386 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 2387 | return (retval); |
fecd2382 RP |
2388 | } /* get_known_segmented_expression() */ |
2389 | ||
58d4951d | 2390 | offsetT |
f8701a3f | 2391 | get_absolute_expression () |
fecd2382 | 2392 | { |
6efd877d | 2393 | expressionS exp; |
f8701a3f | 2394 | |
5ac34ac3 ILT |
2395 | expression (&exp); |
2396 | if (exp.X_op != O_constant) | |
f8701a3f | 2397 | { |
5ac34ac3 ILT |
2398 | if (exp.X_op != O_absent) |
2399 | as_bad ("bad absolute expression; zero assumed"); | |
6efd877d | 2400 | exp.X_add_number = 0; |
f8701a3f | 2401 | } |
5ac34ac3 | 2402 | return exp.X_add_number; |
fecd2382 RP |
2403 | } |
2404 | ||
6efd877d KR |
2405 | char /* return terminator */ |
2406 | get_absolute_expression_and_terminator (val_pointer) | |
2407 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 2408 | { |
58d4951d ILT |
2409 | /* FIXME: val_pointer should probably be offsetT *. */ |
2410 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 2411 | return (*input_line_pointer++); |
fecd2382 RP |
2412 | } |
2413 | \f | |
2414 | /* | |
2415 | * demand_copy_C_string() | |
2416 | * | |
2417 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
2418 | * Give a warning if that happens. | |
2419 | */ | |
2420 | char * | |
f8701a3f | 2421 | demand_copy_C_string (len_pointer) |
6efd877d | 2422 | int *len_pointer; |
fecd2382 | 2423 | { |
6efd877d | 2424 | register char *s; |
f8701a3f | 2425 | |
6efd877d | 2426 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
2427 | { |
2428 | register int len; | |
2429 | ||
6efd877d | 2430 | for (len = *len_pointer; |
f8701a3f SC |
2431 | len > 0; |
2432 | len--) | |
2433 | { | |
6efd877d | 2434 | if (*s == 0) |
fecd2382 | 2435 | { |
f8701a3f SC |
2436 | s = 0; |
2437 | len = 1; | |
6efd877d KR |
2438 | *len_pointer = 0; |
2439 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 2440 | } |
f8701a3f SC |
2441 | } |
2442 | } | |
2443 | return (s); | |
fecd2382 RP |
2444 | } |
2445 | \f | |
2446 | /* | |
2447 | * demand_copy_string() | |
2448 | * | |
2449 | * Demand string, but return a safe (=private) copy of the string. | |
2450 | * Return NULL if we can't read a string here. | |
2451 | */ | |
6efd877d KR |
2452 | static char * |
2453 | demand_copy_string (lenP) | |
2454 | int *lenP; | |
fecd2382 | 2455 | { |
6efd877d KR |
2456 | register unsigned int c; |
2457 | register int len; | |
2458 | char *retval; | |
2459 | ||
2460 | len = 0; | |
2461 | SKIP_WHITESPACE (); | |
2462 | if (*input_line_pointer == '\"') | |
2463 | { | |
2464 | input_line_pointer++; /* Skip opening quote. */ | |
2465 | ||
2466 | while (is_a_char (c = next_char_of_string ())) | |
2467 | { | |
2468 | obstack_1grow (¬es, c); | |
2469 | len++; | |
fecd2382 | 2470 | } |
6efd877d KR |
2471 | /* JF this next line is so demand_copy_C_string will return a null |
2472 | termanated string. */ | |
2473 | obstack_1grow (¬es, '\0'); | |
2474 | retval = obstack_finish (¬es); | |
2475 | } | |
2476 | else | |
2477 | { | |
2478 | as_warn ("Missing string"); | |
2479 | retval = NULL; | |
2480 | ignore_rest_of_line (); | |
2481 | } | |
2482 | *lenP = len; | |
2483 | return (retval); | |
2484 | } /* demand_copy_string() */ | |
fecd2382 RP |
2485 | \f |
2486 | /* | |
2487 | * is_it_end_of_statement() | |
2488 | * | |
2489 | * In: Input_line_pointer->next character. | |
2490 | * | |
2491 | * Do: Skip input_line_pointer over all whitespace. | |
2492 | * | |
2493 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 2494 | */ |
6efd877d KR |
2495 | int |
2496 | is_it_end_of_statement () | |
2497 | { | |
2498 | SKIP_WHITESPACE (); | |
58d4951d | 2499 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 2500 | } /* is_it_end_of_statement() */ |
fecd2382 | 2501 | |
6efd877d KR |
2502 | void |
2503 | equals (sym_name) | |
2504 | char *sym_name; | |
fecd2382 | 2505 | { |
6efd877d | 2506 | register symbolS *symbolP; /* symbol we are working with */ |
f8701a3f SC |
2507 | |
2508 | input_line_pointer++; | |
6efd877d | 2509 | if (*input_line_pointer == '=') |
f8701a3f SC |
2510 | input_line_pointer++; |
2511 | ||
6efd877d | 2512 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
2513 | input_line_pointer++; |
2514 | ||
6efd877d KR |
2515 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
2516 | { | |
2517 | /* Turn '. = mumble' into a .org mumble */ | |
2518 | register segT segment; | |
2519 | expressionS exp; | |
2520 | register char *p; | |
f8701a3f | 2521 | |
6efd877d KR |
2522 | segment = get_known_segmented_expression (&exp); |
2523 | if (!need_pass_2) | |
2524 | { | |
9471a360 | 2525 | if (segment != now_seg && segment != absolute_section) |
6efd877d KR |
2526 | as_warn ("Illegal segment \"%s\". Segment \"%s\" assumed.", |
2527 | segment_name (segment), | |
2528 | segment_name (now_seg)); | |
2529 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
2530 | exp.X_add_number, (char *) 0); | |
2531 | *p = 0; | |
2532 | } /* if (ok to make frag) */ | |
2533 | } | |
2534 | else | |
2535 | { | |
2536 | symbolP = symbol_find_or_make (sym_name); | |
2537 | pseudo_set (symbolP); | |
2538 | } | |
2539 | } /* equals() */ | |
fecd2382 RP |
2540 | |
2541 | /* .include -- include a file at this point. */ | |
2542 | ||
2543 | /* ARGSUSED */ | |
6efd877d KR |
2544 | void |
2545 | s_include (arg) | |
2546 | int arg; | |
fecd2382 | 2547 | { |
f8701a3f SC |
2548 | char *newbuf; |
2549 | char *filename; | |
2550 | int i; | |
2551 | FILE *try; | |
2552 | char *path; | |
2553 | ||
6efd877d KR |
2554 | filename = demand_copy_string (&i); |
2555 | demand_empty_rest_of_line (); | |
604633ae | 2556 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
2557 | for (i = 0; i < include_dir_count; i++) |
2558 | { | |
2559 | strcpy (path, include_dirs[i]); | |
2560 | strcat (path, "/"); | |
2561 | strcat (path, filename); | |
2562 | if (0 != (try = fopen (path, "r"))) | |
2563 | { | |
2564 | fclose (try); | |
2565 | goto gotit; | |
2566 | } | |
2567 | } | |
2568 | free (path); | |
f8701a3f SC |
2569 | path = filename; |
2570 | gotit: | |
2571 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
2572 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
2573 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 2574 | } /* s_include() */ |
fecd2382 | 2575 | |
6efd877d KR |
2576 | void |
2577 | add_include_dir (path) | |
2578 | char *path; | |
fecd2382 | 2579 | { |
f8701a3f SC |
2580 | int i; |
2581 | ||
2582 | if (include_dir_count == 0) | |
2583 | { | |
6efd877d | 2584 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
2585 | include_dirs[0] = "."; /* Current dir */ |
2586 | include_dir_count = 2; | |
2587 | } | |
2588 | else | |
2589 | { | |
2590 | include_dir_count++; | |
6efd877d KR |
2591 | include_dirs = (char **) realloc (include_dirs, |
2592 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
2593 | } |
2594 | ||
6efd877d | 2595 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 2596 | |
6efd877d KR |
2597 | i = strlen (path); |
2598 | if (i > include_dir_maxlen) | |
2599 | include_dir_maxlen = i; | |
2600 | } /* add_include_dir() */ | |
fecd2382 | 2601 | |
6efd877d KR |
2602 | void |
2603 | s_ignore (arg) | |
2604 | int arg; | |
fecd2382 | 2605 | { |
58d4951d | 2606 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2607 | { |
2608 | ++input_line_pointer; | |
2609 | } | |
2610 | ++input_line_pointer; | |
fecd2382 | 2611 | |
6efd877d KR |
2612 | return; |
2613 | } /* s_ignore() */ | |
80aab579 | 2614 | \f |
4064305e SS |
2615 | /* |
2616 | * Handle .stabX directives, which used to be open-coded. | |
2617 | * So much creeping featurism overloaded the semantics that we decided | |
2618 | * to put all .stabX thinking in one place. Here. | |
2619 | * | |
2620 | * We try to make any .stabX directive legal. Other people's AS will often | |
2621 | * do assembly-time consistency checks: eg assigning meaning to n_type bits | |
2622 | * and "protecting" you from setting them to certain values. (They also zero | |
2623 | * certain bits before emitting symbols. Tut tut.) | |
2624 | * | |
2625 | * If an expression is not absolute we either gripe or use the relocation | |
2626 | * information. Other people's assemblers silently forget information they | |
2627 | * don't need and invent information they need that you didn't supply. | |
2628 | */ | |
2629 | ||
4064305e SS |
2630 | /* |
2631 | * Build a string dictionary entry for a .stabX symbol. | |
2632 | * The symbol is added to the .<secname>str section. | |
2633 | */ | |
2634 | ||
58d4951d ILT |
2635 | #ifdef SEPARATE_STAB_SECTIONS |
2636 | ||
80aab579 | 2637 | unsigned int |
d4c8cbd8 | 2638 | get_stab_string_offset (string, stabstr_secname) |
80aab579 | 2639 | const char *string; |
d4c8cbd8 | 2640 | const char *stabstr_secname; |
4064305e | 2641 | { |
4064305e | 2642 | unsigned int length; |
80aab579 ILT |
2643 | unsigned int retval; |
2644 | ||
2645 | retval = 0; | |
4064305e | 2646 | length = strlen (string); |
4064305e SS |
2647 | if (length > 0) |
2648 | { /* Ordinary case. */ | |
80aab579 ILT |
2649 | segT save_seg; |
2650 | subsegT save_subseg; | |
2651 | char *newsecname; | |
2652 | segT seg; | |
80aab579 ILT |
2653 | char *p; |
2654 | ||
4064305e SS |
2655 | save_seg = now_seg; |
2656 | save_subseg = now_subseg; | |
2657 | ||
80aab579 | 2658 | /* Create the stab string section. */ |
d4c8cbd8 JL |
2659 | newsecname = xmalloc ((unsigned long) (strlen (stabstr_secname) + 1)); |
2660 | strcpy (newsecname, stabstr_secname); | |
80aab579 ILT |
2661 | |
2662 | seg = subseg_new (newsecname, 0); | |
2663 | ||
2664 | retval = seg_info (seg)->stabu.stab_string_size; | |
2665 | if (retval > 0) | |
2666 | free (newsecname); | |
2667 | else | |
2668 | { | |
2669 | /* Make sure the first string is empty. */ | |
2670 | p = frag_more (1); | |
2671 | *p = 0; | |
2672 | retval = seg_info (seg)->stabu.stab_string_size = 1; | |
4064305e | 2673 | #ifdef BFD_ASSEMBLER |
d191a03c | 2674 | bfd_set_section_flags (stdoutput, seg, SEC_READONLY | SEC_DEBUGGING); |
4064305e | 2675 | #else |
80aab579 | 2676 | free (newsecname); |
4064305e | 2677 | #endif |
4064305e | 2678 | } |
80aab579 ILT |
2679 | |
2680 | p = frag_more (length + 1); | |
2681 | strcpy (p, string); | |
2682 | ||
2683 | seg_info (seg)->stabu.stab_string_size += length + 1; | |
2684 | ||
abdd08c9 | 2685 | subseg_set (save_seg, save_subseg); |
4064305e | 2686 | } |
80aab579 ILT |
2687 | |
2688 | return retval; | |
4064305e SS |
2689 | } |
2690 | ||
58d4951d ILT |
2691 | #endif /* SEPARATE_STAB_SECTIONS */ |
2692 | ||
4064305e SS |
2693 | /* This can handle different kinds of stabs (s,n,d) and different |
2694 | kinds of stab sections. */ | |
2695 | ||
2696 | static void | |
d4c8cbd8 | 2697 | s_stab_generic (what, stab_secname, stabstr_secname) |
4064305e | 2698 | int what; |
d4c8cbd8 JL |
2699 | char *stab_secname; |
2700 | char *stabstr_secname; | |
4064305e | 2701 | { |
4064305e | 2702 | long longint; |
80aab579 ILT |
2703 | char *string; |
2704 | int type; | |
2705 | int other; | |
2706 | int desc; | |
2707 | ||
2708 | /* The general format is: | |
2709 | .stabs "STRING",TYPE,OTHER,DESC,VALUE | |
2710 | .stabn TYPE,OTHER,DESC,VALUE | |
2711 | .stabd TYPE,OTHER,DESC | |
2712 | At this point input_line_pointer points after the pseudo-op and | |
2713 | any trailing whitespace. The argument what is one of 's', 'n' or | |
2714 | 'd' indicating which type of .stab this is. */ | |
2715 | ||
2716 | if (what != 's') | |
2717 | string = ""; | |
2718 | else | |
4064305e | 2719 | { |
80aab579 | 2720 | int length; |
4064305e | 2721 | |
4064305e SS |
2722 | string = demand_copy_C_string (&length); |
2723 | SKIP_WHITESPACE (); | |
2724 | if (*input_line_pointer == ',') | |
2725 | input_line_pointer++; | |
2726 | else | |
2727 | { | |
80aab579 ILT |
2728 | as_warn (".stabs: Missing comma"); |
2729 | ignore_rest_of_line (); | |
2730 | return; | |
4064305e SS |
2731 | } |
2732 | } | |
4064305e | 2733 | |
80aab579 | 2734 | if (get_absolute_expression_and_terminator (&longint) != ',') |
4064305e | 2735 | { |
80aab579 ILT |
2736 | as_warn (".stab%c: Missing comma", what); |
2737 | ignore_rest_of_line (); | |
2738 | return; | |
4064305e | 2739 | } |
80aab579 | 2740 | type = longint; |
4064305e | 2741 | |
80aab579 | 2742 | if (get_absolute_expression_and_terminator (&longint) != ',') |
4064305e | 2743 | { |
80aab579 ILT |
2744 | as_warn (".stab%c: Missing comma", what); |
2745 | ignore_rest_of_line (); | |
2746 | return; | |
4064305e | 2747 | } |
80aab579 | 2748 | other = longint; |
4064305e | 2749 | |
80aab579 ILT |
2750 | desc = get_absolute_expression (); |
2751 | if (what == 's' || what == 'n') | |
4064305e | 2752 | { |
80aab579 | 2753 | if (*input_line_pointer != ',') |
4064305e | 2754 | { |
80aab579 ILT |
2755 | as_warn (".stab%c: Missing comma", what); |
2756 | ignore_rest_of_line (); | |
2757 | return; | |
4064305e | 2758 | } |
80aab579 ILT |
2759 | input_line_pointer++; |
2760 | SKIP_WHITESPACE (); | |
4064305e SS |
2761 | } |
2762 | ||
ead1a408 | 2763 | /* We have now gathered the type, other, and desc information. For |
80aab579 ILT |
2764 | .stabs or .stabn, input_line_pointer is now pointing at the |
2765 | value. */ | |
4064305e SS |
2766 | |
2767 | #ifdef SEPARATE_STAB_SECTIONS | |
80aab579 ILT |
2768 | /* Output the stab information in a separate section. This is used |
2769 | at least for COFF and ELF. */ | |
58d4951d | 2770 | { |
80aab579 ILT |
2771 | segT saved_seg = now_seg; |
2772 | subsegT saved_subseg = now_subseg; | |
2773 | fragS *saved_frag = frag_now; | |
2774 | valueT dot; | |
2775 | segT seg; | |
2776 | unsigned int stroff; | |
2777 | char *p; | |
2778 | ||
2779 | dot = frag_now_fix (); | |
2780 | ||
d4c8cbd8 | 2781 | seg = subseg_new (stab_secname, 0); |
80aab579 ILT |
2782 | |
2783 | if (! seg_info (seg)->hadone) | |
2784 | { | |
2785 | #ifdef BFD_ASSEMBLER | |
d191a03c JL |
2786 | bfd_set_section_flags (stdoutput, seg, |
2787 | SEC_READONLY | SEC_RELOC | SEC_DEBUGGING); | |
80aab579 ILT |
2788 | #endif |
2789 | #ifdef INIT_STAB_SECTION | |
2790 | INIT_STAB_SECTION (seg); | |
4064305e | 2791 | #endif |
80aab579 ILT |
2792 | seg_info (seg)->hadone = 1; |
2793 | } | |
4064305e | 2794 | |
d4c8cbd8 | 2795 | stroff = get_stab_string_offset (string, stabstr_secname); |
80aab579 ILT |
2796 | |
2797 | /* At least for now, stabs in a special stab section are always | |
2798 | output as 12 byte blocks of information. */ | |
2799 | p = frag_more (8); | |
2800 | md_number_to_chars (p, (valueT) stroff, 4); | |
2801 | md_number_to_chars (p + 4, (valueT) type, 1); | |
2802 | md_number_to_chars (p + 5, (valueT) other, 1); | |
2803 | md_number_to_chars (p + 6, (valueT) desc, 2); | |
2804 | ||
2805 | if (what == 's' || what == 'n') | |
2806 | { | |
2807 | /* Pick up the value from the input line. */ | |
2808 | cons (4); | |
2809 | input_line_pointer--; | |
2810 | } | |
2811 | else | |
2812 | { | |
2813 | const char *fake; | |
2814 | symbolS *symbol; | |
2815 | expressionS exp; | |
2816 | ||
2817 | /* Arrange for a value representing the current location. */ | |
d4c8cbd8 | 2818 | fake = FAKE_LABEL_NAME; |
80aab579 | 2819 | symbol = symbol_new (fake, saved_seg, dot, saved_frag); |
4064305e | 2820 | |
80aab579 ILT |
2821 | exp.X_op = O_symbol; |
2822 | exp.X_add_symbol = symbol; | |
2823 | exp.X_add_number = 0; | |
2824 | ||
2825 | emit_expr (&exp, 4); | |
2826 | } | |
2827 | ||
2828 | #ifdef OBJ_PROCESS_STAB | |
2829 | OBJ_PROCESS_STAB (seg, string, stroff, type, other, desc); | |
4064305e SS |
2830 | #endif |
2831 | ||
80aab579 ILT |
2832 | subseg_set (saved_seg, saved_subseg); |
2833 | } | |
2834 | #else /* ! SEPARATE_STAB_SECTIONS */ | |
2835 | #ifdef OBJ_PROCESS_STAB | |
2836 | OBJ_PROCESS_STAB (what, string, type, other, desc); | |
2837 | #else | |
2838 | /* Put the stab information in the symbol table. */ | |
2839 | { | |
2840 | symbolS *symbol; | |
2841 | ||
2842 | symbol = symbol_new (string, undefined_section, 0, | |
2843 | (struct frag *) NULL); | |
2844 | if (what == 's' || what == 'n') | |
2845 | { | |
2846 | /* Pick up the value from the input line. */ | |
2847 | symbol->sy_frag = &zero_address_frag; | |
2848 | pseudo_set (symbol); | |
2849 | } | |
2850 | else | |
4064305e | 2851 | { |
80aab579 ILT |
2852 | /* .stabd sets the name to NULL. Why? */ |
2853 | S_SET_NAME (symbol, NULL); | |
2854 | symbol->sy_frag = frag_now; | |
2855 | S_SET_VALUE (symbol, (valueT) frag_now_fix ()); | |
4064305e | 2856 | } |
4064305e | 2857 | |
80aab579 ILT |
2858 | S_SET_TYPE (symbol, type); |
2859 | S_SET_OTHER (symbol, other); | |
2860 | S_SET_DESC (symbol, desc); | |
2861 | } | |
2862 | #endif /* ! OBJ_PROCESS_STAB */ | |
2863 | #endif /* ! SEPARATE_STAB_SECTIONS */ | |
2864 | ||
2865 | #ifndef NO_LISTING | |
2866 | if (listing) | |
2867 | { | |
2868 | switch (type) | |
2869 | { | |
2870 | case N_SLINE: | |
2871 | listing_source_line ((unsigned int) desc); | |
2872 | break; | |
2873 | case N_SO: | |
2874 | case N_SOL: | |
2875 | listing_source_file (string); | |
2876 | break; | |
2877 | } | |
2878 | } | |
2879 | #endif /* ! NO_LISTING */ | |
4064305e SS |
2880 | |
2881 | demand_empty_rest_of_line (); | |
2882 | } | |
2883 | ||
2884 | /* Regular stab directive. */ | |
2885 | ||
2886 | void | |
2887 | s_stab (what) | |
2888 | int what; | |
2889 | { | |
d4c8cbd8 | 2890 | s_stab_generic (what, STAB_SECTION_NAME, STAB_STRING_SECTION_NAME); |
4064305e SS |
2891 | } |
2892 | ||
2893 | /* "Extended stabs", used in Solaris only now. */ | |
2894 | ||
2895 | void | |
2896 | s_xstab (what) | |
2897 | int what; | |
2898 | { | |
2899 | int length; | |
d4c8cbd8 | 2900 | char *stab_secname, *stabstr_secname; |
4064305e | 2901 | |
d4c8cbd8 | 2902 | stab_secname = demand_copy_C_string (&length); |
4064305e SS |
2903 | SKIP_WHITESPACE (); |
2904 | if (*input_line_pointer == ',') | |
2905 | input_line_pointer++; | |
2906 | else | |
2907 | { | |
2908 | as_bad ("comma missing in .xstabs"); | |
2909 | ignore_rest_of_line (); | |
2910 | return; | |
2911 | } | |
d4c8cbd8 JL |
2912 | |
2913 | /* To get the name of the stab string section, simply .str to | |
2914 | the stab section name. */ | |
46b81190 | 2915 | stabstr_secname = (char *) xmalloc (strlen (stab_secname) + 4); |
d4c8cbd8 JL |
2916 | strcpy (stabstr_secname, stab_secname); |
2917 | strcat (stabstr_secname, "str"); | |
2918 | s_stab_generic (what, stab_secname, stabstr_secname); | |
46b81190 | 2919 | free (stabstr_secname); |
4064305e SS |
2920 | } |
2921 | ||
604633ae ILT |
2922 | #ifdef S_SET_DESC |
2923 | ||
4064305e SS |
2924 | /* Frob invented at RMS' request. Set the n_desc of a symbol. */ |
2925 | ||
2926 | void | |
604633ae ILT |
2927 | s_desc (ignore) |
2928 | int ignore; | |
4064305e SS |
2929 | { |
2930 | char *name; | |
2931 | char c; | |
2932 | char *p; | |
2933 | symbolS *symbolP; | |
2934 | int temp; | |
2935 | ||
2936 | name = input_line_pointer; | |
2937 | c = get_symbol_end (); | |
2938 | p = input_line_pointer; | |
2939 | *p = c; | |
2940 | SKIP_WHITESPACE (); | |
2941 | if (*input_line_pointer != ',') | |
2942 | { | |
2943 | *p = 0; | |
2944 | as_bad ("Expected comma after name \"%s\"", name); | |
2945 | *p = c; | |
2946 | ignore_rest_of_line (); | |
2947 | } | |
2948 | else | |
2949 | { | |
2950 | input_line_pointer++; | |
2951 | temp = get_absolute_expression (); | |
2952 | *p = 0; | |
2953 | symbolP = symbol_find_or_make (name); | |
2954 | *p = c; | |
2955 | S_SET_DESC (symbolP, temp); | |
2956 | } | |
2957 | demand_empty_rest_of_line (); | |
2958 | } /* s_desc() */ | |
2959 | ||
604633ae ILT |
2960 | #endif /* defined (S_SET_DESC) */ |
2961 | ||
fecd2382 | 2962 | /* end of read.c */ |